Elevated cortisol, high prolactin, low testosterone and countless recent athletic injuries to joints and poor recovery. can it all be related somehow?

Hormones: Yes, these are related. Your high prolactin leads to muscle fatigue , bone weakness and low testosterone. Do you also have breast tenderness and general fatigue ? Go see an endocrinologist.

Yes: If you have these problems, and they've been confirmed by your doctor, you definitely need to be seen by a qualified endocrinologist for a full pituitary work-up.