(((Ouch))) That is such good news! I know how you were dreading going back to work. I'm so glad it was a positive experience. It's obvious you were missed by your co-workers.
I hope the bruises from Celexa go away. Have you been taking it long? I had some trouble adjusting to it at first, but it ended up working very well for me. I take Lexapro now which is very closely related, but requires a smaller dose and has fewer side effects (for me), so that might be an option for you if your side effects from Celexa don't get better.
I'm just so damn happy for you! Onward and upward!