I have this I’m so sore !
If oil isn’t helping try using a thicker moisturiser. I keep one in the fridge so it’s cold for when I’m itchy. A cool, damp flannel also helps and is something you could throw in your labour bag but I’m sure you won’t notice that once things get started.
That sort of thing won't even be a consideration when you're in labour so I wouldn't worry about that at all.