My Chloe was spayed a week ago today and I know exactly how you feel and it is normal. I cried myself home after I dropped her off. My doctor did call me as soon as she was out. I too was scared of the anestisia she is only 3 lbs. and having some dental work too. But the doctor told me she was awake and alert. She did stay overnight (my vet is a 24 hour facility) so we went to visit at 6PM and again at 11PM (I wanted to make sure they were watching her). She came home the next day with an antinflammatory (Metacam) she had that for 5 days. She did not want to eat much and she slept most of the day. I held her all the time

She did whimper at times but it was not bad. By the 3rd day she was back to herself appetite and all. I did put a one piece PJ on her to keep her from licking. She never even noticed her scar. Your baby will be fine and you will be fine when its all over. Keep us updated