Since you are having a relative stay with him, you are definitely reducing the "trauma" of not finding Mom in her bed. Your little guy may not be so happy about it, but he won't feel completely alarmed. The relative will tell him that Mommy is coming back later and again, he may not be happy about it but it will be more frustrating than traumatizing for him. You should be talking to him about this now. There are some library books that can be helpful - "Mommy has a baby" books that show Mom leaving the house with her suitcase, going to the hospital, coming home with a baby. You can draw those three phases on three separate sheets of paper and stick them on the fridge. The relative can then show him the first two pictures and tell him that the third picture will soon be happening. Hopefully, he'll calm down quickly and forgive you for leaving him once he see you with his new baby.    Sarah Chana