could I be pregnant?

Anonymous
So I was suppose to start my period 2/11 but I still haven't gotten it. I'm sometimes irregular but not this bad.  Between my last period and this one I had sex twice but we used a condom and he pulls out. After every time we check to make sure the condom didn't break and no it didn't. I'm stressing about this because I don't know how i could be. What should I do?