The pregnancy rash

Yes, the rash. The pregnancy rash, Pruritic Urticarial Papules and Plaques of Pregnancy also known as PUPPPS. It is a horrible rash that starts on your abdomen and moves to all over your body except your face and the palms of your hands. It is very very itchy. Only one in two hundred have this rash and guess who is the lucky one, yeah you got it ME. I had it a little with the last 4 weeks of pregnancy with Paislee and it was horrible. I was told it is very rare to have it again. Now I am only 16 1/2 weeks pregnant with this baby and BOOM! here it is. I have tried everything from creams to soaps to herbs. I went to a dermatologist and received a shot, cream, and an antihistamine. So far, no success. I have been researching it on the internet trying to find home remedies and so far none are working. The only cure is to have the baby and then the rash disappears. So looks like we have another 23 1/2 weeks to go with my body covered in red which looks like poison ivy. I don't care about the bumps, I just want this itching to stop. If you have any suggestions, please feel free to share.
So if you see me scratching I do not have cooties, just know I am okay..its just a part of pregnancy they tell me.