Pregnancy Concerns: Calculating Conception & Due Dates After Birth Control

Question
Ok.. i was taking the pill and i dont remember my lmp. I had sex wit my ex on oct 6, im pretty sure my period was oct 14. I went to the doc and got 2 diff due dates. The first one was aug 4 and the second one was july 20. I love my boyfriend now.. is the boyfriend now the father? Im jus really confused because of the pill. Are ultrasounds pretty accurate?

Answer
With both of those due dates, you are looking at conception occurring at the end of October or beginning of November.

You did not get pregnant on October 6. First trimester ultrasounds are usually within a few days for predicting approximately time of conception.  Ultrasounds after the first trimester are not as accurate for dating a pregnancy.  I would ask you to talk to your doctor about the discrepancy between the two due dates but whichever one is accurate, you did not get pregnant October 6.