Should I be worried?...

So my boyfriend and I are sexually active and we use a condom every time. A few weeks ago, the condom broke. He didn't finish inside of me but we were still worried about his pre-cum. Three days after that happened I was suppose to get my period. I spotted for two days but I didn't have my actual period. It's been 3 weeks now and my boobs are hurting which is normally a sign that I'm about to have my period. I have an irregular flow so it's normal for me to skip but I'm still worried! What're your thoughts?