Hi there. I just arrived back from a short trip to Cancun where I spent a lot of time on the beach and in the sun. I have no known food allergies or fabric allergies. I woke up to find a rash along my panty line the following morning, and the next day a patch of a few itchy bumps on my rib area. I've applied hydrocortisone to the areas but they still seem irritated. What should I do? Do I need to be worried? What will help?