After the confusion 2 weeks ago with negative and positive tests, and negative blood, I finally got my answer today. I got a BFP!!!
Now to figure out when I am due, do I assume that the faint positive two weeks ago was real, or assume it was a faulty test, since it disappeared. Or do I go by the cramps I was having this week(5 days ago) as being my implantation date.
The standard way to figure out when you are due is to figure out the start date of your last period and count ahead 40 weeks. That is what they will do at your doc's office. This is not foolproof as all women have different cycles. At some point you may have an ultrasound and they will give you a more exact date.