i am in tecate, mexico to teach english. last night, i woke up in the middle of the night, and i felt pretty moderate/strong itching on my arms and my right armpit. i felt a big bump on my neck. upon waking up, i saw lots (like 50-100) of small bumps on my arms, and the big bump on my neck seemed to be a lot smaller than its previous size. There was no itching at allI think I got this most likely from a bug/s bite/s. are these any initial symptoms to any diseases? should i be worried?