i have dermographism, and i am 5 weeks pregnant, i treat my dermographism with 10 mg loratadine, i also have NVP, Rx diclectin; what should I do? I am concerned about taking too much antihistamines, but i know i have to treat the dermographism, if not i would subject myself to pain (welts and linear hives, and swelling over period of time if not treated)