Pregnant?

So my boyfriend and I had sex two weeks ago. I am not on birth control but he used a condom each time and checked the condom after and there were never any holes. He never put his dick in me before he put a condom on. I am supposed to start my period late this week and am breaking out like I usually do before it starts. What's the possibility I could be pregnant? I'm sure very little but I'm freaking out and could use some reassurance.