Rash on both sides of my stomach, 12.5 weeks.

I know PUPPP rash is a thing. But I keep being told that only happens in the third trimester. I didn’t have any rashes with my other two children. One thing I read, unsure on the accuracy of this, but someone said once the babies own gender hormones kick in, if a boy, the level of testosterone is foreign to your body and can react as a rash. Maybe makes sense considering my other two are girls. Either way it’s only getting worse and it’s itchy ass hell. Using a basic rash cream but doesn’t seem to be helping yet. Did anyone else have this?