Princess was just spayed on Monday. Today (Friday) is the first day she has been close to her normal self. She did cry a lot the first few days, tho not scream. She had pain meds for the 3 days following the surgery and they seemed to help her a ton. I found what comforted her a lot was me wrapping her in blankets, or the heating blanket, and rubbing her while talking to her in a soothing voice.
Good luck, and I'll be thinking of you and your baby.