Brief Answer:
YOU CAN'T BE PREGNANT FROM 31st MARCH ENCOUNTER.

Detailed Answer:
Hello,

Thanks for writing to us.

According to your information, you did unprotected sex every weekend including your fertile days or ovulation day (which occurred two weeks before period due date). Therefore, your chance of being pregnant is quite HIGH from unprotected sexual intercourse during fertile days.

Secondly, pregnancy depends on ovulation time or fertile days and unprotected sex with ejaculation inside vagina. The 31st March was Neither your fertile day Nor ovulation day according to last period date. Additionally, he DIDN'T have orgasm and you took morning after pill 8 hrs later. In this case, your chance of pregnancy on 31st March is EXTREMELY RARE or NEGLIGIBLE.

Lastly, your ultrasound scan on 18th April showed gestational age 5 weeks 4 days which corresponds with your last menstrual period date (10th March) and you became pregnant within your fertile days.

Hope, this information is quite helpful to you. Kindly, close the discussion if you don't have any other query.

Wish your good health and take care yourself.

Regards,
Dr Soumen

For future query, you can directly approach me through

http://doctor.healthcaremagic.com/Funnel?page=askDoctorDirectly&docId=63326

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Brief Answer:
NO CHANCE OF PREGNANCY FROM 31st MARCH ENCOUNTER.

Detailed Answer:
Hello,

Thanks for follow up query.

It is QUITE IMPOSSIBLE to be pregnant from 31st March sexual encounter as it was NOT your fertile day.

Pregnancy test gives positive result 10 to 14 days after ovulation and NOT before that. You CAN'T get positive result 5 days after last sexual encounter (as on 31st March).

Hope, I have cleared your doubt. Kindly, close the discussion.

Good luck and all the best.

Regards,
Dr Soumen

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