Struggling

I was supposed to have an ultrasound this week and instead I miscarried. it was my first pregnancy and we were so excited I didn't even consider this as a possibility. everyone keeps saying it's common but I feel like I failed to keep my baby safe. I'm grieving hard and I'm still bleeding and in pain and it's just a constant reminder. how are you guys coping and dealing with a loss like this? I don't even know how to accept that I'm not pregnant anymore