I should think antihistiminic drugs should have some effectiveness as they stop some of the response that causes the itching and redness. I do not know what types of medications you can get with/without a prescription in Belize but I think you should invest in some steroids (medrol dose pak in the states or just some 20mg tablets and use a taper regimen) they will decrease the inflammation (the aching should subside) and will stop an allergic response. I would hate to see this happen to you again. Just my thoughts.