Ovarian cyst instead of pregnancy, possible miscarriage?

My husband and I have been trying to conceive for about 8 months now and I really thought I was pregnant this time (but no positive tests) but I started having very painful cramping and went to the ER last night and it turns out I just have an ovarian cyst. I just started bleeding heavily today and there are tiny clots or tissue that is dark. I'm worried I'm actually having a miscarriage, but only a cyst showed up in the ultrasounds they did last night. I've had a miscarriage before, and I guess it's just the tiny clots that are scaring me. Last time, I had gray tissue discharge followed by heavy bleeding. Has anyone else ever had to deal with the same thing? Did it turn out to be just bleeding from a ruptured cyst? Or were you having a miscarriage? I'm honestly completely devastated. I still am grieving over my first miscarriage and I don't know how I could cope with having another.