Due date calculation: I am not clear what date your were 6 weeks and 4 days by ultrasound. Take a calendar, from the date you had the ultrasound done go back 6 weeks and 4 days. This will give you the presumptive first day of your last menstrual period. Then add 14 days - this is about when you got pregnant. Keep in mind that ovulation can be off by +/- 2 days, and that sperm can survive for around 4 days.
Answered 9/29/2016
3.8k views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
3 doctors weighed in across 2 answers
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question