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Dr Ayan Mukhopadhyay
Senior Consultant - Obstetrician and Gynaecologist and Robotic Surgeon
MBBS · MS (Obs & Gynae) · FIAOG · FMAS
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How the Pregnancy Due Date Works
Your due date is 280 days (40 weeks) after the first day of your last period. This is called Naegele’s rule.
Only about 1 in 20 babies arrive on the due date; most come within two weeks either side. Your doctor may adjust the date after your first scan.
Want a doctor to look at your result? See our Obstetrics & Gynaecology specialists or book an appointment.
Our Obstetrics & Gynaecology Specialists
Specialists at Desun Hospital, Kolkata.
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Dr Sudip Basu
Consultant Gynaecologist and Subfertility Specialist
MBBS · MS (Obs & Gynae) · DNB · FRCOG (UK) · FRCPI (Ireland) · CCST (UK)
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Dr Dipankar Bhattacharya
Consultant - Obstetrician & Gynaecologist
MBBS · MD · DGO (Obs & Gynae) · MRCOG
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Dr Monika Kumari
Consultant – Gynaecologist & IVF Specialist
MBBS · MS · DNB · Diploma in Reproductice Medicine (Germany)
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Dr Subhra Kanti Datta
Consultant – Obstetrician, Gynaecologist and Laparoscopic Surgeon
MBBS · DGO · MD (Obs & Gynae)
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Dr Pritha Chakrobarty
Consultant - Obstetrician and Gynaecologist & Laparoscopic Surgeon
MBBS · MS (Obs & Gynae) · DMAS · FICRS · FMAS · FwART
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Dr Ferdousi Khatun
Consultant – Obstetrician & Gynaecologist
MBBS · MS (Obs & Gynae) · FMAS
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Dr Ajanta Samanta
Senior Consultant – Obstetrician & Gynaecologist
MBBS · MD (Obs & Gynae) · DNB (Obs & Gynae) · MRCOG (UK,London)
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Dr Avijit Basak
Senior Consultant – Obstetrician and Gynaecologist, Advance Laparoscopic & Robotic Surgeon, Reconstructive and Cosmetic Gynaecologist
MBBS · MS (Obs & Gynae) · F.MAS · D. MAS · FWAMS · FIAOG · FICRS · FICOG · Master in Cosmetic Gynaecology
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Dr Joyita Singha
Consultant – Obstetrician and Gynaecologist
MBBS · MS (Obs & Gynae) · DNB · FMAS
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Dr Priyanka Mandal
Consultant – Obstetrician and Gynaecologist
MBBS · MS (Obs & Gynae) · FMAS · MRCOG -1 (UK)
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Dr Ayan MukhopadhyaySenior Consultant - Obstetrician and Gynaecologist and Robotic Surgeon9:00 AM – 1:00 PMBook Dr Ayan Mukhopadhyay on Monday
Dr Sudip BasuConsultant Gynaecologist and Subfertility SpecialistBy appointmentBook Dr Sudip Basu on Monday
Dr Dipankar BhattacharyaConsultant - Obstetrician & Gynaecologist12:00 PM – 2:00 PMBook Dr Dipankar Bhattacharya on Monday
Dr Monika KumariConsultant – Gynaecologist & IVF Specialist4:30 PM – 6:00 PMBook Dr Monika Kumari on Monday
Dr Pritha ChakrobartyConsultant - Obstetrician and Gynaecologist & Laparoscopic Surgeon2:00 PM – 4:00 PMBook Dr Pritha Chakrobarty on Monday
Dr Aparupa GhoshConsultant - Obstetrician, Gynaecologist & Robotic Surgeon1:00 PM – 4:00 PMBook Dr Aparupa Ghosh on Monday
Dr Ononna DasConsultant – Gynaecologist & IVF Specialist3:00 PM – 5:00 PMBook Dr Ononna Das on Monday- BGDr Biswajyoti GuhaConsultant – Obstetrician and GynaecologistBy appointmentBook Dr Biswajyoti Guha on Monday
Dr Pinki AgarwalConsultant - Obstetrician & Gynaecologist1:30 PM – 2:30 PMBook Dr Pinki Agarwal on Monday
Dr Avijit BasakSenior Consultant – Obstetrician and Gynaecologist, Advance Laparoscopic & Robotic Surgeon, Reconstructive and Cosmetic Gynaecologist10:00 AM – 11:00 AMBook Dr Avijit Basak on Monday- JSDr Joyita SinghaConsultant – Obstetrician and Gynaecologist10:00 AM – 12:00 PMBook Dr Joyita Singha on Monday
- Dr Ayan MukhopadhyaySenior Consultant - Obstetrician and Gynaecologist and Robotic Surgeon9:00 AM – 1:00 PMBook Dr Ayan Mukhopadhyay on Tuesday
- Dr Sudip BasuConsultant Gynaecologist and Subfertility SpecialistBy appointmentBook Dr Sudip Basu on Tuesday
- Dr Dipankar BhattacharyaConsultant - Obstetrician & Gynaecologist12:00 PM – 2:00 PMBook Dr Dipankar Bhattacharya on Tuesday
Dr Subhra Kanti DattaConsultant – Obstetrician, Gynaecologist and Laparoscopic Surgeon3:00 PM – 5:00 PMBook Dr Subhra Kanti Datta on Tuesday- Dr Aparupa GhoshConsultant - Obstetrician, Gynaecologist & Robotic Surgeon1:00 PM – 4:00 PMBook Dr Aparupa Ghosh on Tuesday
- BGDr Biswajyoti GuhaConsultant – Obstetrician and GynaecologistBy appointmentBook Dr Biswajyoti Guha on Tuesday
- Dr Pinki AgarwalConsultant - Obstetrician & Gynaecologist1:30 PM – 2:30 PMBook Dr Pinki Agarwal on Tuesday
- Dr Avijit BasakSenior Consultant – Obstetrician and Gynaecologist, Advance Laparoscopic & Robotic Surgeon, Reconstructive and Cosmetic GynaecologistBy appointmentBook Dr Avijit Basak on Tuesday
- Dr Ayan MukhopadhyaySenior Consultant - Obstetrician and Gynaecologist and Robotic Surgeon9:00 AM – 1:00 PMBook Dr Ayan Mukhopadhyay on Wednesday
- Dr Sudip BasuConsultant Gynaecologist and Subfertility SpecialistBy appointmentBook Dr Sudip Basu on Wednesday
- Dr Dipankar BhattacharyaConsultant - Obstetrician & Gynaecologist12:00 PM – 2:00 PMBook Dr Dipankar Bhattacharya on Wednesday
Dr Ferdousi KhatunConsultant – Obstetrician & Gynaecologist12:00 PM – 3:00 PMBook Dr Ferdousi Khatun on Wednesday- Dr Aparupa GhoshConsultant - Obstetrician, Gynaecologist & Robotic Surgeon1:00 PM – 4:00 PMBook Dr Aparupa Ghosh on Wednesday
- BGDr Biswajyoti GuhaConsultant – Obstetrician and GynaecologistBy appointmentBook Dr Biswajyoti Guha on Wednesday
- Dr Pinki AgarwalConsultant - Obstetrician & Gynaecologist1:30 PM – 2:30 PMBook Dr Pinki Agarwal on Wednesday
- Dr Avijit BasakSenior Consultant – Obstetrician and Gynaecologist, Advance Laparoscopic & Robotic Surgeon, Reconstructive and Cosmetic Gynaecologist10:00 AM – 11:00 AMBook Dr Avijit Basak on Wednesday
Dr Priyanka MandalConsultant – Obstetrician and Gynaecologist11:00 AM – 2:00 PMBook Dr Priyanka Mandal on Wednesday
- Dr Ayan MukhopadhyaySenior Consultant - Obstetrician and Gynaecologist and Robotic Surgeon9:00 AM – 1:00 PMBook Dr Ayan Mukhopadhyay on Thursday
- Dr Sudip BasuConsultant Gynaecologist and Subfertility SpecialistBy appointmentBook Dr Sudip Basu on Thursday
- Dr Dipankar BhattacharyaConsultant - Obstetrician & Gynaecologist12:00 PM – 2:00 PMBook Dr Dipankar Bhattacharya on Thursday
- Dr Subhra Kanti DattaConsultant – Obstetrician, Gynaecologist and Laparoscopic Surgeon3:00 PM – 5:00 PMBook Dr Subhra Kanti Datta on Thursday
Dr Ajanta SamantaSenior Consultant – Obstetrician & Gynaecologist3:00 PM – 4:00 PM
6:00 PM – 8:00 PMBook Dr Ajanta Samanta on Thursday- Dr Aparupa GhoshConsultant - Obstetrician, Gynaecologist & Robotic Surgeon1:00 PM – 4:00 PMBook Dr Aparupa Ghosh on Thursday
- BGDr Biswajyoti GuhaConsultant – Obstetrician and GynaecologistBy appointmentBook Dr Biswajyoti Guha on Thursday
- Dr Pinki AgarwalConsultant - Obstetrician & Gynaecologist1:30 PM – 2:30 PMBook Dr Pinki Agarwal on Thursday
- Dr Avijit BasakSenior Consultant – Obstetrician and Gynaecologist, Advance Laparoscopic & Robotic Surgeon, Reconstructive and Cosmetic GynaecologistBy appointmentBook Dr Avijit Basak on Thursday
- JSDr Joyita SinghaConsultant – Obstetrician and Gynaecologist10:00 AM – 12:00 PMBook Dr Joyita Singha on Thursday
- Dr Priyanka MandalConsultant – Obstetrician and Gynaecologist11:00 AM – 2:00 PMBook Dr Priyanka Mandal on Thursday
- Dr Ayan MukhopadhyaySenior Consultant - Obstetrician and Gynaecologist and Robotic Surgeon9:00 AM – 1:00 PMBook Dr Ayan Mukhopadhyay on Friday
- Dr Sudip BasuConsultant Gynaecologist and Subfertility SpecialistBy appointmentBook Dr Sudip Basu on Friday
- Dr Dipankar BhattacharyaConsultant - Obstetrician & Gynaecologist12:00 PM – 2:00 PMBook Dr Dipankar Bhattacharya on Friday
- Dr Ferdousi KhatunConsultant – Obstetrician & Gynaecologist12:00 PM – 3:00 PMBook Dr Ferdousi Khatun on Friday
- Dr Aparupa GhoshConsultant - Obstetrician, Gynaecologist & Robotic Surgeon1:00 PM – 4:00 PMBook Dr Aparupa Ghosh on Friday
- BGDr Biswajyoti GuhaConsultant – Obstetrician and GynaecologistBy appointmentBook Dr Biswajyoti Guha on Friday
- Dr Pinki AgarwalConsultant - Obstetrician & Gynaecologist1:30 PM – 2:30 PMBook Dr Pinki Agarwal on Friday
- Dr Avijit BasakSenior Consultant – Obstetrician and Gynaecologist, Advance Laparoscopic & Robotic Surgeon, Reconstructive and Cosmetic GynaecologistBy appointmentBook Dr Avijit Basak on Friday
- Dr Ayan MukhopadhyaySenior Consultant - Obstetrician and Gynaecologist and Robotic Surgeon9:00 AM – 1:00 PMBook Dr Ayan Mukhopadhyay on Saturday
- Dr Sudip BasuConsultant Gynaecologist and Subfertility SpecialistBy appointmentBook Dr Sudip Basu on Saturday
- Dr Dipankar BhattacharyaConsultant - Obstetrician & Gynaecologist12:00 PM – 2:00 PMBook Dr Dipankar Bhattacharya on Saturday
- Dr Aparupa GhoshConsultant - Obstetrician, Gynaecologist & Robotic Surgeon1:00 PM – 4:00 PMBook Dr Aparupa Ghosh on Saturday
- BGDr Biswajyoti GuhaConsultant – Obstetrician and GynaecologistBy appointmentBook Dr Biswajyoti Guha on Saturday
- Dr Avijit BasakSenior Consultant – Obstetrician and Gynaecologist, Advance Laparoscopic & Robotic Surgeon, Reconstructive and Cosmetic Gynaecologist4:00 PM – 5:00 PMBook Dr Avijit Basak on Saturday
Dr Rajarshi DasConsultant – Obstetrician and Gynaecologist5:00 PM – 6:00 PMBook Dr Rajarshi Das on Saturday
- Dr Subhra Kanti DattaConsultant – Obstetrician, Gynaecologist and Laparoscopic Surgeon10:00 AM – 12:00 PMBook Dr Subhra Kanti Datta on Sunday
- Dr Rajarshi DasConsultant – Obstetrician and Gynaecologist5:00 PM – 6:00 PMBook Dr Rajarshi Das on Sunday
Timings can change on holidays — our team confirms your slot when you book.
Pregnancy Due Date — Questions
Still Have a Question?Talk to our patient care team — we’re available 24 × 7.+91 90 5171 5171
When should I have my first pregnancy visit?
As soon as you know you are pregnant, ideally before 10 weeks.
Which scans will I need?
Usually a dating scan at 6–9 weeks, the NT scan at 11–14 weeks and the anomaly scan at 18–22 weeks, with more as your doctor advises.