Possible allergic reaction?

I went to the doctor yesterday feeling really sick and found out I have a sinus infection. They prescribed me amoxicillin and ever since I began taking it I have been sneezing a lot! I always have a tingly feeling in my nose. I have never been allergic to any medications before so I don't know if this sneezing is a part of my sinus infection running its course or if it's because of the antibiotic. Anybody have any insight?