1 Pain is present in the upper teeth and is worse on one side of the face.  Even without antibiotics, most people can fight off a bacterial infection, especially if symptoms are mild. About 70 percent of the time, symptoms of acute bacterial sinus infections go away within two weeks without antibiotics. When sinusitis symptoms last seven to 10 days or more, it's a good idea to see a doctor to discuss treatment options. Mayo Clinic Health Letter is an eight-page monthly newsletter of reliable, accurate and practical information on today's health and medical news.