Tomorrow Virga goes under!

Well...as the title implies tomorrow Virga is going under for her spaying. I'm probably going to be a nervous wreck but at least my husband is here this time. But I just wanted to see what, if anything, I need to be worried about, what should I look for after we get her back, just general kinds of stuff. Doppler was neutered and a neuter is less involved surgically as a spay (I believe) so we don't really know what to expect. I know the vet will tell us something to do and watch out for but I guess I just wanted a heads up. Thanks in advance!