Hi, may I answer your health queries right now ? Please type your query here...Hi,I have pain on my right side of the cheek if feels like the upper jaw, ear pain and headache. I am sensitive to light too. I went to a walk in clinic and they gave me Amoxicillin. When is the medication going to kick in and could this be caused by my tooth?. The doctor i saw was not sure- he suspected sinuses. I don't feel like it is my sinus. I am worried , please help.