Far out! Wow Im in awe of you having stayed the rest of the day. Well done for getting through it without panicing. You are stronger than you think.
I can totally understand the hesitance in wanting to return. I think being on your T's cancellation list is a good idea. It was a very traumatic event and you have every right to be upset about it.
I wish I had some advice about how to deal with the emotions but Im all tapped out, Im sorry.
Goodluck for your next work day and know we are all here to support you