Hair dye allergic reaction?

i arrived home a few days ago from a vacation trip. just yesterday i decided to dye part of my hair. this morning i woke up with a small allergic reaction on my thigh, which was really interesting. as the day went by, the reaction had spread to the rest of my legs and on my arms. i don't know how that happened because I've been in bed being sick. do you think i should change my bed sheets too because they haven't been washed in a while? & do you have any clue what i should do about it? the product i used was from Revlon.