Be been exclusively pumping and got this sore on my boob (I had pump setting turned up full power) at first it looked like a big red bump, then it turned to this yellowish sore. I picked it off once and it bled and was like a open wound so it hurt to pump! Now it's just scabbed over with white/yellow crap again 🤷🏻‍♀️. And it still leaks clear fluid when I pump... what the heck is it?!?