I was wondering if anybody on here is suffering from a puppps rash? if so did it start on your belly? I have a mean ass…

I was wondering if anybody on here is suffering from a puppps rash? if so did it start on your belly? I have a mean ass rash on my thigh/hip that started with pregnancy and WON'T go away. I'm 15 weeks. my doc keeps saying it's not puppps but don't worry about it. but it itches so bad and is spreading down my leg and butt. please help! TIA