What a painful situation for you - really sorry for you. I am glad you decided to post what happened.
I hope you can use up that sick time and give yourself time to figure out what to do. Things will look somewhat better in the am I hope.
Well that was a dirty deal they pulled on you - giving them notice of sorts will look better for other jobs as others have stated. Try to make them feel as uncomfortable as possible when you go to work - that might give you some satisfaction at least .