13 weeks with subchorionic hemorrhage

I'm officially 13 weeks today. Yesterday had a bit of a scare. Was relaxing on the couch and got up and immediately felt a gush. I knew it wasnt cm and had to be blood. I have 2 healthy children and also a miscarriage in 2014. My sister in law immediately came over to watch our kids so we could go to ER (my doctors office was already closed) baby looked great on ultrasound and heartbeat was high 150s. I do have a subchorionic hemorrhage though which is causing the bleeding. I have an ob appointment with my doctor tomorrow. Hopefully it clears up sooner than later, as I am terrified to basically do anything and trying really hard not freak out.