Getting sick before surgery. Will I have to reschedule it? And will elderberry syrup effect anesthesia negatively?

My surgery is scheduled for Friday, which is 3 days from now. I've had a canker sore for a few days and along with that I have a swollen gland, a sore throat and I feel a little achy. Hoping I don't have to postpone my surgery. I've been waiting for a long time for this. Also, can anyone tell me if elderberry syrup has negative effects on anesthesia? I've been using it in tea since I started feeling sick. I hope not. Thank you!