Bleeding & scared

I'm 7 weeks 6 days pregnant with twins. I had a scare on Mother's Day evening with some bleeding. I freaked & went to the ER. They couldn't really tell me anything cause I was so early in pregnancy. The bleeding stopped that night. The following Thursday I had bleeding again. I had my follow up doctor appointment from the ER visit the next day (Friday). They did a vaginal ultrasound & seen twins. My doc however said one twin wasn't going to make it. I was 5 weeks 5 days. Had another ultrasound the following Tuesday I had another ultrasound & seen both heartbeats! I have been feeling pretty good until today. My partner & I had sex this morning. Felt fine all day. Then about 7pm I felt like I was bleeding. Went to the bathroom & passed 2 clots the size of quarters. Still bleeding, but not saturating pads. Has anyone else experienced this?