Itchy but

I know this sounds disgusting but for the past few days my butt not the hole but between the cheeks has been super itchy like irritating itch. Usually I get waxed but I haven’t gone in a long time so I thought maybe the hair was to long I shaved it I’ve washed my but multiple time and it’s still itchy. I am now starting to think it’s a rash of some sort. I am also 18 weeks pregnant has anyone else experienced this during pregnancy. This is my second pregnancy I’ve never experienced anything like this with my first I have no clue that to do and quite embarrassed to ask my dr