OP, I do think it is nice that you want to spend time with your newborn. If your EX agrees to you spending the night you need to be flexible about it. Childbirth is far from pretty and your EX may not realize what she is agreeing to until she actually gives birth. If she is nursing, she is going to be topless at least 30% of her hospital stay. Newborns nurse often and they usually take a long time to nurse. She will be bleeding A LOT, and there may be clots. Not nice little clots but clots the size and shape of a lemon. When she gets up to go to the restroom, it is more than possible that she will be leaving a trail of blood. Even with the huge pad she will be wearing. I don't mean to gross anyone out but she may not be comfortable with an audience during this time. However, she may not realize she is not comfortable until she is in the moment. If she agrees and you decide to spend the night, look for cues that she is not OK with you there and excuse yourself for the night if she seems uncomfortable. If the birth experience, between the 2 of you is positive it will go a long way toward your future relationship. If she looks back on her hospital stay as a miserable experience, it will be very hard for her to get over the negative feelings.