Yeah it might be a sinus infection because you have two sinus cavities on the top right side, where your cheek is. I was prescribed amoxicillan.
My ear has been hurting and my nose has been stuffy for weeks bc of the weather change.
Ok so i had a "toothache" on the top right side and it turned out to be a sinus infection. It was very painful. I'm not sure if you have the same thing, do you have any other cold symptoms?....
Make sure to get that one! It really works!
http://www.amazon.com/gp/aw/d/B000GGKQGQ/ref=redir_mdp_mobile?pc_redir=1395713365
There's this stuff called KANKA! I have the same problem and haven't been able to make an appointment yet. I promise you it works amazing! It doesn't taste bad either and leaves your mouth smelling minty! :)
Where is the toothache? Bottom or top?
Make a dentist appointment, I got gingivitis due to my pregnancy but they said it clears up once the baby is born. Better to get it checked than to be in pain.