I agree with the others, it would be good to know how long you've been on Prozac. And they are right, it could be a number of things (depression, meds, undiagnosed medical problem). After my second or third med my doctor to gave me a complete blood count (CBC) exam (nothing there but at least it gave me a some piece of mind)....a CT scan is next but those very expensive. Regardless, ask your doctor to give you a blood panel to rule out stuff like thyroid problems, if you haven't already. After that and if you've given the Prozac a chance to work, ask to be switched to another medicine. I would never hesitate to tell the doctor that your meds are not working or giving you problems. I hope that helps some. Take care.