Did I miscarry?

I had unprotected sex and a few weeks later I started getting all to early pregnancy symptoms, increased smells, bloating, sore boobs enlarged nipples. I have really small nipples usually and they were huge and that's never happened before a period before.

When I took tests they all said negative, not a huge surprise as I've had anorexia and my hormones are weird and I drink a lot. Like a lot.

Then when my period came it was so heavy and just AGONY!!! It's not been that painful for a long time, but the one after was also painful :/.

I was just finishing personal training when it started. My mum said it was possible if I ever was pregnant that that was what made me lose it. I'd told my personal trainer that I may have been pregnant and he said we would only do light exercise but he pushed me harder than he'd done in weeks. May sound strange but my PT is really sadistic and enjoys hitting me in the gym, seeing people in pain and stuff like that, maybe he wanted me to lose it?

Could anyone help? It's driving me insane.