Write down exactly what you want to say, anything you think the doctor should know. Then if you can't find the courage to say it out loud you can give the doctor your note. Trust me when I say, don't wait another year because the sooner the treatment starts the sooner you will begin to feel well. I understand you're fear and its normal so do whatever you can to make sure you tell the doctor. He wants to help you but he can't if he doesn't know there is anything wrong.