Your symptoms sound like mine were about 5 years ago. I had an X-ray which I didn't see but was told it was normal wear and tear for someone in their late 40s. I had some physio which helped a bit. However, things got progressively worse until about 2.5 years ago, I was walking with a really bad limp, was in constant pain and wasn't sleeping well because every time I moved in bed, the pain would wake me up. During this time, I had various visits to the G.P. and was sent for more physio. After a weekend away when I could hardly walk, I went back to the GP yet again and was referred for more physio. This time, the physio was superb and said I needed to see an orthopaedic consultant. I had another X-ray and this time, asked to see it. The whole hip joint was badly damaged with osteoarthriris. The consultant said it need replacing straight away.The hip replacement went really well and after 6 weeks I was back in the swimming pool and teaching part time.