I have bad allergies

in the fall and have to get shots every couple of weeks so I don't get hay fever. Winter has never bothered my allergies which is probably one of the reasons I like it so much. Well, they started shooting me up with a new vial of junk at the doctor's office and now I have had hay fever for the past 2 days. It is very unpleasant. The shots are supposed to prevent hay fever, not cause it, right? Oh well, I am going to go blow my nose.