My dr cancelled my appointment last minute. I take medication?

Call in asap. if you are running out of your medication - as the doctor may be able to provide a temp refill telephonically with your pharmacy. Take care.
On call. Call the clinic be here he works and find out if you can speak to a nurse or whoever is on call, and explain the situation and your subsequent need for medication ASAP. That should suffice to get your refill completed.