8-|This is really wierd for me. My period starts every month the second week. This month it started the 5th of april. Before my period started i had very light pink when i would wipe, and it barely showed. 14-15 days before this i had sex. At the time i think i was ovulating. But it just doesnt make sense because the day after the light pink was showing i had my regular horrible cramps(i have endometriosis) but my period did not have anything in it like it usually does such as blood clots or any material. And when i usually start my period my flow is extremly heavy. So this time it was lighter than usual with the same painful cramps. Before this the sunday after i had sex my lower back and sides of my stomach had this sore feeling. I also had nausea but it worsened after i started bleeding. Im trying to understand what is happening but there are so any possibilities, its insane. I feel so different compared to my normal self. It feels as if my body is getting ready for something. Any suggestions on what i might be going through?

I would really appreciate it.