Our girl was spayed just a couple of weeks ago, she was feeling a bit sorry for herself for a day then she was back to her usual self as if nothing had happened. Good luck and dont worry she will be fine x
Really, try not to worry. She will be fine. My little Tiani was done a month or so ago. She was back to herself in a couple of days. Showed no sign of pain at all. I know how worrying it is though, so best wishes coming your way