I took antibiotic before I had tooth removed. Then about 5 days after finishing omnicef I had 2 molars adjacent from each other removed. About 2 days after the extraction I had pus and slimy snotty infection coming out of the tooth sockets and an over powering bad taste in my mouth and nausea that kept me from not eating because everything tasted rotten. I called my dentist office and explained my situation then I was called in another script for omnicef 300 mg with 7 refills. The first one I will be finishing tomorrow and the infection is better but not fully gone. Is it safe to keep taking these antibiotics? I have never seen any antibiotic with any refills and I don't know when to stop taking them. I am aware that persistant usage will cause my body to build a resistance to them. Please respond ASAP