Thanks for your query.
You did not mention about your age and sex.
Is more common In menopausal women.
Some Infections and even medicines like Steroids
also cause osteoporosis.
You first visit a physician.
You need to be examined Initially later he can plan for some calcium supplements
or might advise a scan.
Hope I have answered your query
I will be available for your follow up queries If any.
Wishing you good health.