Would you like to hear the irony of it....
The very next day, the supervisor calls me in to talk.
I have made a huge mistake the previous Friday, writable and documented in my record. We are allowed 4 of these kind of mistakes before FIRING! Just lovely, huh?! I was SO angry at myself and am still upset, but even more so when I found out the following....

She knew about it on Friday, gathered all the facts Friday and Monday( even knew when I had my review on Monday ), but waited until the end of the day on Tuesday as I was leaving to tell me because it upsets people and they cannot focus on their work. I did not sleep all night Tuesday night but figured how it happened to not make the same mistake again. I also then talked to each of my supervisors on Wednesday morning first thing, asking them that should I, heaven forbid, make ANY mistakes of this kind or any other in the future to please NOT wait to tell me. I could be making it in the interim and the sooner I know the sooner I can fix it. I have enough professionalism to stay focused on the task at hand and just do not want to keep making the same mistake. I cannot fix what I don't know about and too much harm can be done otherwise. I hope they will follow through as they supposedly agreed with this even if I do make whatever mistake(s) as I said, especially heaven forbid, one of this magnitude again.

The only comforting news is no one was harmed and this one was caught before any damage could be done. I was seriously lucky. I will be more vigilant in the future and know what I did not to do that again.

What a roller coaster of a week.

Thanks for your support meanwhile and well wishes. It truly means the world to me.