I Have DJD In My Right Ankle Which Causes Me

I have DJD in my right ankle which causes me to baby it and put more weight on my left leg. My left leg is also about 1/4 " shorter than the right leg. It would swell at times but go away after a few days. But now, for the past few months it is getting worse. It is not going away as quickly, now my knee and leg swells to twice it's size. At times it gives out and now my right leg is doing the same. My hips and lower back pain is getting worse. I already see pain management for the back pain and right ankle pain. My pcp referred me to sports medicine, PT, and did X rays of my left knee. X rays showed a benign bone growth on the outer left side. I have tingling and feeling like my legs are being squeezed and like I ran a mile in my legs for no reason, and feeling of burning in my tailbone and hips. Doc says just take tylenol, lose weight, and see sports med. I told her I've been extremely exhausted lately, I knew being in more pain will make you more tired but not this tired. I can fall asleep standing, literally. I can do the dishes, put a load of laundry in and I'm exhausted where I have to sit and put my legs up cause I can't go on, legs will give in. And even with them up, the swelling don't go down and the numb tingling sets in. I'm worried I may have something worse. Lupus and fibro myalgia run in my family. Please advise.