I’m sorry. Pregnant but spotting pink to brown

I have 4 miscarriages the last 2 years.

I finally had a positive test on Jan 15th. The day I tested and got a positive test that evening I was spotting brown for 2 days and it stop completely. Yesterday after using the bathroom I notice pink blood. Not a lot but enough to freak me out. I came home and slept the whole afternoon and all day today. Every time I use the bathroom and wipe it’s brown. I’m so worried and I see my OB doctor tomorrow.