Pls help! Rash???

Em

So I’ve had this rash for like two weeks or so. I showed the OBGYN she said to see my primary care. My primary care said she won’t see me cuz I’m pregnant: that they should handle everything. It seems to be getting worse now. It’s migrated to my upper thighs and arm pit areas. It’s primarily on my lower back/side, breasts. And the big one is on the side. Please if you have any ideas what it is or what to do!