Antiobiotics first trimester

Angela
I'm 12w3d and have a nasty sinus infection. Me ear, face, teeth hurt and I have a nasty yellow dischargr from my nose. I've been like this for a week and have been doing saline basal rinse and finally broke down two days ago and took 500mg tylenol once a day for the pain. 
Today my GP called me in a scrip for Augmentin but I'm so afraid to take it. Has anyone else take. Antiobiotics I'm the first trimester?