5 wks - brown mucus, now bright red blood

Hi ladies! sorry for the TMI but I’m hoping someone can give me some insight. I’m 4wks 5 days today. Got a BFP yesterday. When I woke up this morning I had brown mucus discharge which turned into bright red bleeding but only when I use the bathroom. Has anyone had this happen? I’ve been scouring the internet and it sounds like a miscarriage? I’m hoping someone might have a different outcome.. I have a call into my OB as well.