Rashes on thighs

I am 15 weeks now too. Been having the rashes since I find out that I'm pregnant. Nothing seems to help me heal my rash.. I have it on both my legs and arms. But suu balm cream does help with the itch. Ask ur gynae what he or she recommend! My gynae ask me to keep myself moisturise all the time and if by next month I still don't recover maybe need go see dermatologist..