There are many, different, easily treatable medical conditions that have nothing to do with Alzheimer's disease that can affect and impair memory function. If your memory problems are causing you anxiety, you should urge your doctor to order some diagnostic tests, to find out exactly what the cause is, so that you can be helped as soon as possible. You shouldn't have to live with the constant doubt and worry of "maybe this is Alzheimer's" hanging over you. I hope that it all works out well for you.