Pcos or endo

Kayyyy
My periods have always been really heavy and irregular at times for six months they will come every month then I won't for a few months . I have a lot of lower back pain and pelvic pain . I don't have unwanted hair I don't have acne at all the only symptom of pcos is in over weight and have a hard time loosing weight and when they tested my testosterone it was normal but she did a free testosterone test and it was high so she said pcos . But I just don't feel confident in that diagnosis ? Does anyone have any advice ?