With endometriosis, you need a holistic approach to fighting the disease. Just nutrition or just surgery or just PT is not enough.
To effectively fight this disease, you need a team of medical professionals that believe and understand your disease and how it affects you specifically. So while waiting for your appointment for either diagnosis or laparoscopy, also find a pelvic therapist. Find a nutritionist. Find a functional doctor. Find a GI specialist because many times, endo patients tend to have GI issues as well.
This way theres hope of living a good quality of life even with the disease.