What with everything you have on your mind on monday, this new decision you have to make is just beyond your capacity. You're in no state to make the call. Emotions are running high, and you're just not willing to risk the consequences. You might want to let everyone (including the boss) know that you're going through some intense stuff and will be preoccupied all week. Do something nurturing for yourself on wednesday, and consider indulging yourself a bit on friday night. You need some rest and relaxation, and a stress-free weekend. Imagine how good that will feel.