This whole situation sucks cause you need your medicine obviously and you also know there's a shit ton of weed in Mexico ........and something tells me it wouldn't be terribly hard to find lol however with my luck I'd end up in some crazy cartel/police sting and having to perform a donkey show in Tijuana after swallowing many large condom wrapped pills given to me by a strange man who doesn't speak English just before my flight home Lol. Seriously though I honestly wouldn't know what to do I hope it all works out for you cause I know your medicine would help you enjoy your vacation a lot more try not to stress like I said I hope it all works out for you