BLGP I certainly didn't take it as insensitive, I was trying to let you know that I'm here to help because my sitch had a lot of similarities.
A few months into my sitch, I found a friend, co-worker, who I was finally able to talk to about all this and it helped.
Three weeks is nothing. You will be fine. Focus on the work and don't worry about the rest, don't think about how it might be (it will be different), and don't worry about a bad day or get excited about a good day. Just take it one day at a time and deal it with it when the time comes.
As far as telling co-workers. That is tough. You have to evaluate your situation and what you are comfortable with. I never did tell people at work and don't have regrets. There are a million things I did wrong and wish I had done differently, but this is not one of those. Our work situation was/is unique...only you can evaluate yours.
M39 W41 Two children WAW bomb dropped 11/7/09 Piecing Aug 10 - Nov 10 No longer piecing...Nov 10 Separation Jan 11 EA ends again Feb 11 Piecing attempt #2, Mar 11