Brown Discharge after going to the bathroom, going on 3 days

I’m 7 weeks today, I had ultrasound of baby yesterday and everything measured spot on and a heartbeat but after a previous mmc last year at 10 weeks 5 days, I’m afraid that it’s going to happen again. Anyone have this and had a healthy baby? Could it be caused from my subchorionic hematoma? The ultrasound lady said it’s a small one and that it could be causing it but she didn’t know. I have another appointment with my doctor tomorrow and I’m praying to God this baby stays put and stays healthy.