I think everyone understands that you might want to take a step back.
Remember that grief isn't linear and it's still very early days. It took me a good few weeks for everything to sink in. Initially the hormones, telling everyone about the birth and sharing Jack's picture sort of carried me through as well as a good dose of shock I think. It was the aftermath that was the hardest in a way, when there wasn't anything to 'do' as such.
I can also relate to pregnancy/baby being a need rather than a want. I recall it being a very hard time.
Be gentle on yourself with regards to work.
If you ever need to talk feel free to fb me. I'm friends with CP on there.
Take care and take the time you need
H x