I don’t know what you had, but if it’s from pumping 2 months ago, it’s not blisters or the donut effect, as both of those conditions clear up quickly.
PEing is quite easy, but you have to read about what you are going to do before you do it so you don’t make careless mistakes light going overboard and hurting yourself.
I am glad that whatever you had went away. When you continue with your PE, stay within recommended guidelines and avoid injury. Trying to make PE work fast by doing things to excess only slows the process way down.