making myself crazy?? or?

Okay so I had unprotected sex Saturday night. I'm on the pill but my work schedule just changed recently so I definitely haven't been taking them at the same time as normal. since then I've felt pressure in my lower belly/pelvic area, felt slight cramping, felt bloated and have been between diarrhea and constipated. it's extremely early to have any sort of symptoms of pregnancy so do you think I'm just worrying myself crazy??