I have been getting in a hot tub for close to two months now. It has never bothered me and I have never had an allergies that I know of but for some reason the past couple time I've been in my skin gets really irritated and itchy. After I get out I notice rashes all over and in some places my skin is bumpy. It will normally go away after a week but then returns the next time I hop in. Do you think I could be allergic to a chemical that's put in it?