I always carry a bottle of liquid Benadryl and the pills. The liquid works faster in an acute allergy attack. And you can ask your doctor to recommend or prescribe a non-drowsy type of antihistamine if the Benadryl knocks you out. But they will dry you out, so drink lots of water (sorry, but I wouldn't recommend alcohol while on these). Not recommended by the medical profession, but I take the pills at night if needed, and a booster short shot of the liquid during the day and don't feel so whacked out.

Since you've just had a reaction, I would suggest you use non-perfumed stuff (body wash, shampoo, laundry detergent, etcl) as you skin may be but hyper sensitive. At least, that's my own experience. We're all different. Have a super trip. I have had hayfever since I was a kid, and got reactions to sitting on the grass. I have never, ever had any problems in Jamaica. Maybe they have hypoallergenic flora!?