I got rash (eczema) too :-( last 2 weeks because the dry and cold weather , particularly on my wasit, inner arm and armpit. I felt very icthy and then I called my ob/gyn specailist. At the beginning, she recommended me to take benedroyl which is safe for pregnant woman, however, I refused to take it. Afterward, she recommended me to visit a dermatologist. I told the dermatologist I am pregnant and he didn't give me any cream and mediaction. (In gerenal, most medical creams contain steriods which has side effect to your body.) He just recommended me to use fragrance free soap, cream not lotion (Cetaphil cream), and shampoo as well as revisit him a week later to check whether my rash is gone. Now, my rash is getting better.
In addition, I would like to remind you that soaps, fragrance, dye and bleach tend to make eczema worse.