My period was a few days late, nothing out of the ordinary as I have irregular periods. Had what I thought was a period from the 21st-1st of August. It was very light, but would get heavy after sex. Some days I wouldn’t even bleed, only when I’d wipe. Itsover now, no more bleeding, but my lower back cramps are insane, and I never get cramps during my period. I have a stiff neck, and mild headaches that come and go. I also got randomly nauseous the other day in the middle of the day, it came and went twice. I also got this with a faint line. Any thoughts? And I pregnant?