Did you have unprotected sex? And, is your period late? Those are the two main questions. If yes to either, then take a pregnancy test. It's the only way to know! Come back and tell us!
Oh and when I had the spotting I had NO CRAMPS. I usually have horrible periods!!!! I have endometriosis so my periods are very painful but there was NO pain NOT Even the SLIGHTEST CRAMPS. My periods are also irregular but I've never spotted like that before I have a pretty good flow on my period and a lot of good sized clots but none of that when I spotted. Ughhh going out of my mind