Is this normal?

I got a positive pregnancy test three days ago, and keep getting random small bits of brown discharge. It’s not every time I go to the bathroom, but about once a day. Is this normal? I’ve had two very early (4 weeks) miscarriages before, and I am worried. I had my blood draw on Wednesday and it was a 63, and I had a repeat today but never got the results before the office closed. Worried and just want some peace of mind. Thank you!