I have a blister on the ball of my foot from walking on Saturday. I haven't had a blister here before, just on my heel. It's the size of a quarter and hurts to walk on, especially in heels. Do you let these heal on their own or do you let the fluid out with a sterilized needle? I dont want it to pop on its own and cause more issues, but I don't want to mess with it either. What would you do?