Sudden foot injury

I don't really see what might be of value in guesses and suppositions when you are going to have an actual examination tomorrow. Wait and see if you receive a diagnosis and either get one from your doctor or have your doc clearly acknowledge to you that he/she does not have a clear diagnosis. Report exactly what you have been told here, including the treatment offered, its rationale as explained to you by your doctor and the prognosis and anticipated time frame for results if you would like further discussion regarding the diagnosis, the treatment offered and possible alternatives. But you will have to offer medical grade information. The clarity of the information you can expect back will be dependent on the specificity of it which you offer.