I don't mean to alarm you, but at Sissy's last vaccination a few weeks ago, my vet said recent studies report that most reactions occur from inflammation at the injection site - which can be caused by a too small needle needing to be forced or by wriggling. If Maggie doesn't settle down after 1/2 a baby aspirin, I would take her back in while the vet is still open and have her thoroughly checked.......
I hope she is just sore and nothing more serious. Please keep us posted.
__________________  Sissy & Angel |