How will I know if I'm alergic?
, you have already shown a reaction/sensitivity to the sting. If I were you, I would take some antihistimines, it's too late now for the hot water (probably wouldn't work in this situation anyway, it is good for toxins/venoms though). Keep a close eye on your breathing, and consult a physician. Allergic reactions go two ways, either they get milder the more times your exposed to the allergy or they get worse, might not be a bad idea to have an epi stick on hand.