In sudden disbelief

My husband and I have been married 1 1/2 years now. We have a 4 1/2 yo who is our best friend and absolutely wonderful. All of a sudden-6 days before my scheduled c-section- I am in a complete and utter panic. Literally, I'm sick to my stomach daily and trying to my best to realize that were going to have another little sweetheart. I am truly excited to meet our sweet boy, but I'm having the hardest time with the change for my daughter. I'm seriously spoiling her rotten right now. Anyone else feel at all this way?