Help please!!!!

okay so my boyfriend and I had protected sex about 4 days after I got off my last period. We used a condom BOTH times, and he always pulls out before he finishes (he never finishes inside me) But the second time, while we were having sex, the condom broke, and my boyfriend pulled out immediately. Its been about a week since the incident, and I cannot get it off my mind. I keep hearing my stomach making noises and having weird feelings in my stomach but I think I might just be paranoid. Im not sure when I ovulated, because my periods have been irregular lately. Can someone PLEASE reassure me that I'm okay?? I'm really freaking out.