Please Help

I Have The Worseee Period Pain Ever. I Don’t Understand My Body. My Period Finished On 4th Of March And I Felt Funny After Few Days When Period Ended Anyway Friday And Weekend iFelt Nauseous And Then Yesterday And Today I’m Having Period Pain? Why Is This Happening???? I Had This Same Situation - The Bad Stomach Pain And Nausea Everyday Two Years Ago And Turned Out I Was Pregnant But Sadly Had Miscarriage After Few Dayssss. I’m So Confused This Time, Being Female Actually Sucks 🙄🙄🙄