What to do about blister?
 

i have like blood blister now since i hold my raquet with the pinky completely off the handle and the buttcap digs into my palm. after years of playing like this this is my first blood blister the size of a dime. now i can't even hold my raquet, so im wondering if i should pop it or not. i have popped multiple blister but never got infected. Should i try my luck at this one?

let it be and don't play for a while. The blood will recede and the skin will be stronger. It will take a couple days but it will be well worth it.