I need help

The last day I took the pill I had somewhat like sex we never finish but we were protected we kept trying to put it in but then we had to stop. So we really didn’t have it. But Normally I’m on and off with my period like I never know when I have it. I haven’t got it yet the last day I took the pill was February 24th. But my boobs are hurting and I’m cramping somewhat I can’t tell if I’m coming on my period. I need help I’m confused?i can’t be pregnant right?