WePow,
So sorry you are feeling like this. And so soon. But I trust that you are in a different place now, a more healed place. You have some new found strengh and power.

Can you use that to think through the situation at work, and have a word with your manager? He might not realise what your needs are, or might have forgotten. Can you explain to him calmly what you need, what you agreed on previously? You don't need to quit your job. See whether you two can work it out. If he is impossible in the end, and you really really feel you cannot handle the pressure at work in the end, then think about alternatives. But right now don't jump to hastly conclusions. You have to communicate with him and resolve this conflict.

You feel upset, and you are right to be upset. This is very stressful for you. I know it's hard but try to put that aside for a moment, when you go to work, and think through how best you'd like to proceed with your manager in a way that is best for you. Try to work on a compromise with him that works for both.

Try to stay grounded and calm. It is real life, full of pressures, yes. Your T can help process the emotions but you will have to handle the situation at work. Keep at it, you have wonderful strength and intelligence, and try to use that to be assertive and to get what you want now. You can stand up to him. He is not one of your abusers, he is a different person - and probably hasn't got a clue about what's best for you. And what is good for you (as you will be productive) is probably good for his company too, long term.