Hip and lower back pain: Is it related to endometriosis

I am passed my 6 weeks recovery and apart from little itching at times and burning where the cut is, there is not really any pain in my abdominal region. However, I have been having some serious lower back and hip joint pain on my left side for a few weeks now; so much so that i have to live on pain killers. Although I  had a slight pain and discomfort in these areas prior to the surgery, what I am feeling now is extreme. 

It started 3 days or so after my first lupron shot. I visited my surgeon who suggested it might be a pinched nerve, but referred me to a specialist. The specialist after having me bend and lift my leg etc to diagnose the situation, prescribed some medication and give me a list of stretches I should do and asked me to see him the following week time. I returned with the same complaint telling him that once I am not on the medications, sitting, standing and walking is difficult. He referred me to a physiotherapist who I have been seeing for the last 4 weeks, but I am not seeing the changes. I walked in his office the last time in pain to give him and idea as to what I am like when I am not on painkillers. I deliberately did not take them that day. He was in shocked. He opted to increase the amount of time he is seeing me in a week. The thing is I get temporary relieved but I am still waiting to hear the cause while my financial resources are slowly depleting. 

Yesterday, my repeat medication was finished and again I woke in pain. I wish I can describe it vividly enough. It is like your knees want to buckle and the joint seem to be constricted. It is terrible. So I went to the health centre and I was sent for an x-ray. So i am going to be doing that soon and hear what it is being said. My surgeon is off the island so I am awaiting his return next week to find out if it has anything to do with the endometriosis as I have seen a few articles and blogs where people are saying it may be related. Having done the surgery and being on lupron however, I am not sure what my case is, but keep me in your prayers. If there is anyone out there, who have similar situation, please let me know what it is like for you and what you have been doing about it.

Here is a link about endometriosis and hip pain http://ezinearticles.com/?Understanding-Endometriosis-Hip-Joint-Pain&id=552820

Just to take a quote from it:

"Hip pain or pain that radiates from the buttock and down the leg are common in women where endometriosis has effected the sciatic nerve. Also, endometriosis in the groin area can feel like hip pain.

On occasion endometrial adhesions can restrict the hip ligaments, causing pain and limping. Hip joint pain that worsens in a cyclical fashion in line with the menstrual cycle will usually be caused by endometriosis."