hi, i was wondering if anyone could shine some light on this for me and HELP me. i am having an allergic drug reaction to one of the drugs im on... the drs think its either progesterone or clexane. i have hives from head to toe and it's really starting to worry me. i am 11 weeks pregnant with twins and am worried this will do damage to the bubs. the only way of working out which drug it is is by eliminationg one at at time..... i feel like i cant wait that long and the worry is getting me down.