Nexplanon Removal... THOUGHTS?

I recently got off the nexplanon January 15th i started spotting the next day for like 2-3 days it seemed like period to me but i had unprocted sex with my boyfriend january 21st, i’ve been cramping and feelings nausea here and there and VERY bloated. but i took an ovulation test strip 4 days ago just to see if i was ovulating and it was negative i also took a pregnancy test a week after i had sex which was negative. But maybe i could be having these symptoms from hormonal changes?