As doctor can't sure the illness after X-ray, I think an MRI is needed. I think it's very difficult for you till wait till next year as you will be much worry. You may try this 骨科 doctor and ask the price.
Dr. Lau Hoi Kuen
clinic in Jordan, Kowloon
Tel: 23321112 or 23321818
I have bought insurance. Last time I got a MRI in Baptist Hospital costs around $6-7000 stay over one night.