Could I be pregnant?

I had sex (with a condom) around a moth and a half ago. He didn’t come while we were having sex, and I got my period about a week after (I’m pretty certain it was my period because it lasted 6 days and felt like one). I haven’t gotten my period again yet and it’s 10 days late, and I look a little bigger in my lower tummy area. Is it possible that i’m pregnant?