I am 7 months pregnant and I started forming rashes all over my legs. I think it's Pupp. It's really itchy. What can I do to alleviate the itch

It happens higher chance during first pregnancies and if you are having a boy. I had it for both my boys. Both times it was very bad from head to toe. First time I just tolerated it and it only subsides when I deliver the baby. And two weeks later the marks also disappeared. For baby 2 I used a strong steroid cream (from dermatologist) and piriton tablet, which is safe for pregnancy. It went away after a week. Both times sitting in aircon room and taking cold showers twice daily helped. I change to cetaphil shower gel as well, as the scent is mild in comparison to normal soap. You can also try grandpa pine tar soap, helps for some ladies but I never tried it. Middle of the night I would use cold packs to relieve the itch.