Nair hair removal

Apparently pregnancy has made me very sensitive to chemicals. I was in a well ventilated area and only had it on 2 out of 5 minutes and my skin starts burning! I immediately start taking it off and notice there's huge blisters all over my skin. I freak out and hop in the shower and get it all off. I've never had this problem. My armpits, legs, and part of my face (accidentally scratched with a bit on my hand) are blistered like I swam in boiling water!