not meanin to worry you but i had a condition with my first pregnancy where my skin (mainly hands and feet though) became ridiculously itchy. I mentioned it to my mw who did a blood test and told me i had choleostasis, a condition where the liver starts playing up and can be dangerous... however i was really late in my pregnancy by then. I'm sure you're fine as you are still early but I think you should def mention to your mw at your next appt, a simple blood test will put your mind at rest.
I'm sure you'll be fine, but it wouldn't be right if I didnt mention it....