Maybe due osteo arthritis....There’s no cure for osteoarthritis as yet, but there are a number of treatments that can help ease symptoms and reduce the chances arthritis becoming worse...options are analgesics, NSAIDs,intraosseous steroid injection and hyaluronic acid injections,Physiotherapy like strengthening exercises etc ...Consult nearest orthopedic surgeon they will do the needful.
Visit a chiropractor for further assessment and with 2-3 sittings of combine therapy your pain may get decrease and you will feel better. As you are young so the progress can be achieved in a good time.
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