Clarify: april 29 bloodwork pregnant 10,000 may 8, bloodwork 24,000 pregnant april 13, vaginal us 6wks 4days, heart beat 113. when did i conceive?

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.