What Bite Me?

It is too difficult to tell what bit you, but it isn't a good thing to have the heat around the bite. Go to the doctor, and see what they think, they might give you a prescription for antibiotics, and some salve to put on the bite to help it heal. Look around your bedding to see if you can't find something there, make sure you look between the covers as well, as it could still be hanging around. Hope this helps, good luck.

Indeed, it is hard to tell. But don't fret, I have a suggestion. I just recently  got bitten by fleas on the ankle(at night!)and the symptoms were strikingly similar to yours. I hope this helps.

I've had that before...i suggest you go to the doctor's because they cured it...but they never figured out what it was...i believe it was just a bed bug <^^>

It was a spider bite but I'm not sure what kind of spider. But i would definitely get it looked at by a doctor. It is not good that it is red and it is not good that there is heat coming off of it.