Miscarriage

I had my period over 1 week ago and I put my vaginal ring back in and everything has been normal since. Last night I was extremely nauseous, cramping, headaches, couldn't sleep, etc. I have had heavy bleeding all day today. My next period isn't supposed to start for another 15 days. I feel like I may have had a miscarriage but I've only had sex once since my last period and I had my vaginal ring in and we used a condom and it didn't break so idk what's going on with me.