I feel like something is very wrong.

I have anxiety and I'm 11 weeks+ with my rainbow baby. I woke up with this deep feeling that something is wrong with me or baby, like they're going to say no heartbeat again or something terrible is wrong chromosomally and we'll have to terminate. I'm under a bit of stress right now and I can't figure out if this is just needless anxiety, a sign that something is very wrong or just normal worry that my stress could hurt the baby.

Update: I started bleeding. Only a little but Red. And cramping. Like the start of a period.