Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain pain in left hip that is lingering since 3 weeks can occur due to a number of reasons like
Tendinitis, Bursitis,
hip fracture, hip dislocation,labrum tear, inguinal hernia,
osteoarthritis, Rheumatiod arthritis,
Sciatica, Sarcoiditis, muscle sprain etc..
I would suggest you to consult an Orthopedician and get evaluated and a thorough clinical evaluation and investigations like x ray,MRI Scan, blood tests etc can help in diagnosis and treatment can be planned accordingly..
You can be advised to take anti inflammatory painkillers, muscle relaxants like Chlorzoxasone,do warm compresses,
Physiotherapy under a trained physician, avoid bending again and again..
Avoid lifting excess weight.
You should loose weight if obese..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.