Help.!

Naya
My last period was may 22nd and didn't end til June 1. Today is my ovulation date ,but I'm spotting blood and cramping . like I'm on my period. I'm on BC the nexplanon implant I read that it can cause your period to last way longer then normal. But I stopped my period and bleeding on the first of this month and from there on them I've been spotting . has anyone gone through this?