Sunburn feeling on skin

Just curious to see if anyone else has experienced this...

I’m 37 weeks pregnant and for the past two weeks have had this burning sensation - numbing, tingling, sunburn - under my bra line where the top of my uterus is. It feels very surface level, like just on the skin. It comes and goes throughout the day.

I’ve asked 3 different doctors about it and they’ve all said it’s a combination of my skin stretching, my uterus being up high, and the heartburn I’ve been experiencing.

Does that sound right? I know liver issues are something to watch for, but they said that would feel more like a deep pain.

Has anyone else experienced this or are experiencing this?