What do y'all think?

Ivy
So I started my "period" on time, I have the regular cramps and pain that comes with a period but there is little to almost no bleeding. I usually bleed VERY heavily. I have also always used tampons, and this time I can't even leave one in bc it gives a really sharp pain. 
Yes I have unprotected sex and I know the consequences, but i don't quite think this is pregnancy, what do y'all think?