It's actually not just small knots, you can see by just looking at her that it's swollen. When I first noticed that the base of her neck was swollen, I felt of it, and there is like a stripe across the base of her neck that is knotted up. It's not that I feel 2 little knots where he gave her the shots...the whole thing is noticably swollen. I'm going to wait until Monday and see how she is. She gets little bumps sometimes just out of he blue and my vet thinks she's having a little allergic reaction to something and suggested giving her 1/3 or 1/2 of a benydryl to see if that helps...I may try that. Maybe she's alleric to the meds he gave her.
Anyway, thanks for all the tips. She doesn't act like it bothers her when I mess with it, but she never acts like anything hurts (other than her sensitive feelings, of course), but she's not scratching at it or anything. So I feel better about that.
Thanks again everyone!