Will coughing while having a small subchorionic bleed make me lose the baby? Or make everything worse?

On Tuesday I had a gush of dark pinkish blood one time and I went in for an ultrasound Wednesday and my specialist said I have a small subchorionic bleed and that they are very common and not to worry. I haven't had any bleeding since then but I came down with a cough on Thursday and I'm just now getting over it. Just a few minutes ago I was sleeping and coughed hard and I felt a ton of pulling in both sides of my pelvic area which really hurt. I always pull my knees to my chest when I cough to help with pulling ligaments but I was sleeping and had a tickle in my throat and the cough just came out. Could this hurt the baby and make me lose it? Or make this subchorionic thing worse? I'm 8 weeks pregnant. Everything is just so scary since I've had two miscarriages prior to this pregnancy. I've never dealt with a subchorionic bleed before