Bra problems

Kris🐶🐶👶🏼
So right under my boobs is really really sore. Im assuming its bc of my bras rubbing into me and my boobs are not being properly supported bc ive been wearing sports bras for the last 6 months (im 33 weeks pregnant) my boobs arent big but theyve gotten a little bigger. I even tried to put on a regular bra today so i would have some support and the underwire was painful so i put a sports bra back on. 
Anyone else have this happen? 
Im not sure what to do. Its really irritating my skin and all day at work im trying to readjust my girls.