Stubborn hands

I'm currently 6.5 months pregnant right now. Everything is fine except for perspiring quite alot these days and because of that, I'm experiencing some discomfort and itch under my boob area. And my mistake is i've been scratching the itch away! And now my under boob has like dry skin or something. Is there any cream for the itch to stop? Also, any cream to recommend to rub on my belly for the stretch marks that are coming? TIA!