I go back to work in 3 weeks - 8 till 2 daily. Wish I didn't have to, but I do. A conference has been planned for 2 weeks after that, for the whole team from around the UK. I will have to get up at 3am to leave and would not be back till 11pm that night.
DS is breastfed and pretty full on still. He will be ok at nursery I think with expressed milk but very dependent on me to be fed to sleep and fed through the night. I think he would be distraught to wake up in the night and for me not to be there, also to go to bed with me not there. Sorry if I sound precious, I'm not trying to be.
If I explain this to work I think they will just say, tough, you need to come.
Would IBU to tell a lie and say that I have a hospital appointment on that day that can't be moved? I don't like lying (who does) but to me it's better than leaving DS all day and thinking of him crying and needing me. The conference is just a get together and I can do my job without attending.