i was out walking on the highway where ive been walking for mths. i touched a butterfly bush that was by either poison oak or sumac. i have what looks like hives on my arms from my wrist up to where my shirt sleeve stops it itches like crazy how do i get read of it ?im using caladryl &benadryl tablets that make me sleep.i started getting the welts a day ago .I know i got into poison cause i get poison ivy in the air or by plant i had in my flowerbed til i ripped it out w/ gloves on then i washed w/ dawn dishsoap