I started my period exactly 4 years ago today. I haven't used birth control since January 2010. I had slightly irregular periods but had one every month up until August 5th since then I have had one period then. I would be 15 weeks 4 days pregnant if I am. But I don't know how to talk to my doctor last time I was pregnant it didn't show up on any pregnancy tests I didn't know till I felt it move and got an ultra sound but lost the baby within a week of finding out I was pregnant :/ so how do I do this?

How old are you? Have you taken an HPT? As to talking to your doctor its simple: Doc, I missed two periods, can you test me?