Hello there, I am dr.milan an infectious disease specialist answering your question, I also agree with your doctor. Because sudden pain after stoping of antibiotic is not the feature related to staph infection. If infection is remaining than you have associated symptoms like fever, bodypain and many more. You have not mention your age here. I think you need to see an orthopedic surgeon. Because in later age our bone became weak and slight straining may lead to so called pathological fracture. You just go through x-ray examination and along with your serum calcium level. According to that calcium supplement can be started. You need to do suggested things. Hope i have given appropriate guidance to you. if you have any query you can consult me anytime. Give me star rating according to your satisfactory level. Thanking you.