I need some help

A • Jesus is my savior.

So I had spotting back in august for my first time. I am a day late with starting my period. I have been super nauseous feeling and really bad pain in my cervix. It feels like a rubber band is snapping on my cervix and in my uterus. Has anyone experienced this? Please any advice would be great. Thank you. I've had what looks like faint positives.