Charlie goes in tomorrow morning to get his baby canines extracted. They never would fall out

I'm scared of him going under. I hear it is hard on the tiny ones and hard on the big guys. I've had mastiffs that do NOT do well under anesthetic (have mastiff puppy now too that would scare me). I have never owned a toy breed before that had to go under. He is only 5.4 pounds so it worries me. They tell me he will be in a little discomfort afterward and I was thinking "well that's not so bad if just a little" but then I had to ask....is it like when we get our teeth pulled and she said YES!! Well when I've gotten teeth pulled it hurt like heck! What can I do for him when he comes home?
btw I will try to post pics of charlie so you can "meet" him. Not sure if it'll work cause I haven't done it yet.
oh another btw......I"m Charlie's MOM. I don't know if I've posted here before but pretty sure I must have a while back since I had a name and password, lol. Nice to meet you all

That is my 16 yr old son in the pic with Charlie. It was taken today. Please excuse Dante's (dobie) "goodies." Never seems to be a time during picture taking that he ISN'T like that, lol.