So my period was a week and a half late. I took a test two weeks ago it was a negative. Monday my boyfriend and I had sex I then started spotting. Tuesday I started having clots bigger than quarters dark red almost black even! I had lower back pains my lower stomach hurt I was in so much pain I didn't get out of bed I tried three hot showers to stop the pain then used a rice pack for heat on my lower back and stomach. This morning the clots were grayish and I still had pain but not as bad as yesterday's. Now I'm hardly bleeding. I have never had cramps during any of my periods and if I did it's nothing a shower couldn't fix in 5min. Was that a miscarriage? What do I do now?