Burning after masterbastion?

i posted this allready but i thought i would add a few things the past few days i have been jerking it alot lol and today im getting a burning felling i had a bladder infecshion for a few weeks went back to the docter and he said everything is ok it does burn when i go to the bathroom is that becouse ive been jerking it alot or could i still have a bladder infecshion and can i do anything about the burning