Period?

Lizette

So I started my period 2 days early. Heavy the first 2 days then stopped. Next day mid morning came back with excruciating pain in my lower back, and cramping. Next day light then medium flow then now nothing. I have been having unprotected sex this entire month with him finishing inside. I'm on my 6th day now with barely anything. Usually lasts 7 days. I'm still bloated. Feeling pinching in both sides. Is it just a crazy period? Could it be pregnancy?