I started getting allergy shots a couple months ago and I just switched to a new vial. The next day I started having more sinus drainage, a sore throat, and itchy eyes. could this be caused by the allergy shot?
Yes, this is why you have to wait 30 min or an hour before leaving the office.
If the symptoms above are not your usual symptoms, you might just be getting a cold, but I would suggest checking with your doctor.