Please help with my chaffing

So i work at a hospital and the ac was out. We don’t know how long the ac will be out. I sweated so much and my underwear started rubbing against the bottom of my butt. So chaffing occurred. I put hydrocortisone on when i got home (after showering) but what else should i do since i work the next few days?

I worked 12 hrs today and was dripping in sweat, it was disgusting and uncomfortable. I never smelt so bad and been so sweaty. My face is breaking out from it already.

My plan is to bring a fan and a extra change of scrubs. But is there anything i can do to help prevent chafing or help prevent from this chafing getting worst?