I am currently awaiting a scan for what sounds like an almost identical pain with very similar symptoms. I experienced the pain initially about 3 months ago in my upper right leg/groin and it slowly subsided over a 5 week period. Then out of the blue one night at work it returned and with lower back pain too (possibly sciatic?) and I was almost unable to walk or straighten up. Anti-inflams and painkillers from the doc saw me back on my feet within a week. However, the pain is still there and is aggravated by movement rather than heavy lifting. I have noticed that when I cough or sneeze the pain is very sharp and almost unbearable, but only when stood upright or while walking. I will post again with scan results once I have them next month and I am doing various stretches and generally being very careful when bending etc. If I come across an accurate diagnosis I'll let you know! :-(