please somone help me.i have lump on my left inner cheek of my bum. First it was just behind my anus and now it moved to left of the anus. And when ever i go for excretion ,after two hours the pain will start and pain is severe..it lasts for 4-5 hrs and decreases.due to tha pain iam also getting fever. What this might me? Iam really worried.. please someone help me out. Thanks in advance