Well, if you can otherwise function well and there are no other symptoms except the left sided pain with the primary tests being fine; this is unlikely to be anything serious, though it is best decided after an evaluation by a specialist; wherein a management plan can be decided upon. Meanwhile you could try some Tylenol or occasional OTC NSAIDS and see if this seems to help.
Hope this is useful.
Thank you for your reply, that definitely gives me more info than I have received so far. I am still waiting the hear back from my doctor. The pain is getting worse and is relocating itself in different areas all through out the day..(left side only: pelvis,hip,lower back, up my side). I have had diarrhea almost every day the last 2-3 weeks,it's like the pain is stimulating my nervous system. It his hard to explain all these symptoms to my doctor with out sounding like a hypochondriac. I just worry of course that it is something bad and the longer I go without finding a diagnosis the worse it is getting.
Hip pain can be caused by a number of reasons such as infections, inflammations, arthritis, bursitis, capsulitis, ligament/ tendon/ muscle injuries, tendonitis, fractures, dislocations, nerve impingement/ injury, muscle strain, avascular necrosis, growths/ osteophyte formation etc. just to name a few. A few of these may not be detectable on regular imaging techniques such as the x-rays/ ultrasound or blood tests and may require further evaluation. Radiating/ throbbing pain is more likely to be related to neuro-vascular causes or rarely hormonal/ endocrine abnormalities and micronutrient deficiencies. It would be best to get this evaluated by an orthopedician with opinion from a neurologist and vascular medicine as well. If a cause is diagnosed, it can be managed accordingly.
Hope this helps.