Please ease my mind

Almost 3 weeks ago the condom broke while doing anal sex, as soon as we heard it he pulled out, he didn’t finish but there was only some precum which my boyfriend said didn’t touch my vagina at all. He didn’t touch my vagina with his is dick or put his dick inside me after it had broke. The precum only touched his hand. I take the combination pill everyday at the same time. I’ve only taken one pill 50 min late this month. My period is coming in 3 days and I don’t have any symptoms of pregnancy if I were to be. I only have bigger boobs from pms which happens every month. Would u think I’m pregnant?