S.,
You have PUPPPS! (yes, 3 P's) It is a rash related to pregnancy. "Pruritic urticarial papules and plaques of pregnancy". I had it my last trimester and for about two months after I gave birth. It was only on my lower part of my body, from my stomach down. It was awful! UNGODLY ITCHY! I found the only thing that truly worked for me to get relief was Bandaid brand gel for bug bites, etc. It is more expensive then other remedies and you use a ton, but it works! While pregnant, there isn't much you can take. My doctor gave me benadryl and told me to take it at night so I could sleep, (Which I used once) but it made me so tired and I didn't want to take anything that would sedate the baby. I also used a topical foam prescribed by my doctor called OLUX, that really worked, but, I can't remember if I used it after I had my daughter or if it was safe to use while pregnant. There are a ton of web sites (some really humourous) that have lists of remedies that others have used. I feel for you..PUPPPS drove me mad! Good Luck!