going on a week and half late.

Kati
I really don't understand what's going on. I'm never late or anything. My periods are pretty regular. I take the pill but I don't use a condom. I've taken a pregnancy test a few days ago and it game out negative also took one a week ago same result. Is it really possible that I could be pregnant? I have no symptoms. With my first I didn't have any symptoms either but the test came out positive the first time I took it.