Bactrim and second time

Diagnosed with MRSA on my right leg 2 months ago, was prescribed Bactrim(2 a day for 7 days) and didn't have any major side-effects. I now have MRSA again and have been prescribed a higher dosage of Bactrim and have some possible side-effects as well. As noted by others, I can not sleep (as is evident by this posting time, if its EST), but I am exhausted! Also, I have occasional shooting pain down my right arm and my fingers on my right hand are numb. This usually occurs while I'm lying down.

Not sure if these are directly related to the Bactrim, but thought I'd post in case anyone else has had something similar. Seems not too much out there regarding the arm pain (as I try to self-diagnose in the middle of the night :) ).

After taking several doses of Bactrim for Montezuma's Revenge, I have devoloped skin irritations; and on one occasion, my hands, face, arms and parts of my legs broke out with hives (atleast I think they were hives). The second time I ingested only one tablet of Bactrim for the same purpose, the back of my left ear grew warm, and the next day some skin wiped off of it, and I have noticed that parts of my face feels like tiny threads of string are draping across it, even though there aren't any.