Strange paines

Well i got these strange pains for like 1 week or so.

To summarize, i get random burns sensations on different parts of my body (like burned skin!) and sometime excruciating pains from these parts but these are for short moments.

The strangest part of all is that these burn sensations migrate to a random region of my body after a couple a days or so. For example: My belly felt this way for 2 days or so then the burn sensation stopped. I also looked at that region, it looked perfectly normal, no redness or so. Not much time after, one of my arms had this sensation and then my upper genital area (hope that's a correct term for that zone), and so on.

Please help, i would appreciate a lot.