I have ended up in the ER Twice for pain and swelling of the leg. Checked for a blood clot. Please if any one can inlighten me about this. Sorry to hear about your pain. Unfortunately it is common and especially with lower back problems.
Surgical intervention is the last resort and has mixed results.
Your symptoms have a real SI irritation flavor. Rehab has also been found to be helpful. Usually there are exercises to strengthen the muscle surrounding the spine, pain medications or manipulation to help the patient do the exercises and relieve the imbalanced muscle contractions. Anti-inflammatory medications to reduce swelling and inflammation around the site, especially the boney inflammation. Proper lifting techniques and posture are taught.