I am about to start pct, and am already thinking about the future...

If I never got my test levels checked before I started my cycle how can I ever know if I am fully recovered?

I know there is a range of natural test levels that I could compare my test level to after getting it tested, but would my doctor my old test levels recorded or stored from previous blood tests years ago?

I feel as though i naturally have low test as my facial hair is pretty pathetic, and don't know if i'll ever know if i am ready to go again...