Wow, did your employer have your explicit permission to share information about your disorder with the doctor? You would have needed to sign a release form for that.
You are right. I think people scrutinize your behavior and moods more closely when they know you have a mood disorder. My son, 10 yrs old, has bipolar disorder. I try not to chalk up every little out burst to the disorder. It becomes any excuse. You may need to say something to people about this. You could tell them that you are human and have emotions and moods. Reming them that you are being treated for the disorder. They don't need to be that mindful of your moods.
Your employer is walking on thin ice. She may be in violation of your rights. These rights are under the Americans with disabilities act. Perhaps you should familiarize yourself with this. Protect yourself and your job.
You are not alone in this. If you have experienced something it is sure that someone else has too. Hang in there. You can vent here with no judgement and find lots of support and rapport with others.