I have a hearing disability, too, and it took me years to train my bosses and coworkers how to communicate with me effectively. People often feel awkward around those with disabilities because they don't know how to act. I educate them, and they forget. It's an ongoing process; nothing to get upset about or take personally but you do have to constantly educate people on how to communicate effectively with you. Just keep reminding people to face you when speaking, don't cover their mouth, etc. I ask a lot of questions, too, to be sure that I heard the instructions correctly. I also write down the instructions as I am quite forgetful. I do try to ask all of my questions in one go. I've found that constant questions annoy people, because they interrupt their work flow.

At best, your boss sounds like a jerk and your coworkers sound like they don't have much emotional maturity if they're constantly complaining about other behind their backs. I wouldn't have much to say in that environment either. Doesn't sound healthy.

Working in a noisy kitchen must be so exhausting in and of itself. Kudos to you for a job well done. It sounds like they give you stuff to do since you're the one that can get it done. Good luck with the ob search. It'll be worth it!