Calculating Your Due Date: What to Expect After a Late Conception

Question
I had sex 1 week before my six weeks were up and now I'm pregnant. I havent had a period though. How will my due date be determined?

Answer
The only sure way to determine your due date accurately will be to have an ultrasound as soon as possible.  Ultrasounds performed during the first 10 weeks of pregnancy are accurate to within a few days, but the accuracy is not so good after the first trimester.  So see your doctor as soon as possible!