Ok, I had sex three times before my period and now that it has started it is way too light. My period always starts hard and heavy with LOTS of cramping. I read on someone's post earlier that they had their period and it was light and spotty because they were pregnant and didn't know it. I'm not trying to get pregnant, so if i am it's a big "Haha" to my stupidity, but I just wanna know if I could be.