Pain behind my eye, nose, also toothache all on the right side of my face.sinus with thick yellow mucus, weakness and shortness of breath sometimes.

Question ?: You've just stated symptoms. If you are asking what ails you, it can be a number of things, including but not limited to a sinus infection or an abscessed tooth. Have yourself examined by a local dentist and physician to determine the cause of your problem. Feel better soon..

Sinus infection: Sounds like you have a major sinus infection. This can cause pain in your upper back teeth and behind your eye. You are on an antibiotic, but it may not be the correct one for your infection. I would have an evaluation by an ear, nose, and throat specialist asap. They may recommend draining the infection and/or changing which antibiotic you are taking.