am I pregnant?!! HELP

am I pregnant?? I had sex 6 days after ovulation, but how I'm 2 days late on my period. but I feel like my ovulation was late anyways? I'm not sure. anyways, for a few days after sex I had these killed cramps in my uterus area. I knew it wasn't pms because I never have any signs and I've had my period a long time. there's no other thing other than stress that could be doing this. it sucks because me and my partner just split up. so we're trying to figure this out. I also was very bloated around that time last week for about 4 days. and now that my periods late I'm just tired and achey. my head hurts. so I'm not sure why I should do?? I've been doing constant research since last week. help please!!