My period has been somewhat irregular for the last couple of years. At first my period was coming more often than normal and then I began skipping months altogether. During the last three months it has been regular. Yesterday, on the day my period was due, I spotted during the day. In the evening I had sex with my boyfriend and spotted during sex as well. My bf ended up ejaculating inside me since we thought I was on my period. Now, I have not gotten my period and I'm worried that I could get pregnant.