Nope, I waited ten days before starting the antibiotics and virus was already out of my system. I am prone to severe sinus infections, which are bacterial and can be triggered by anything that includes nasal congestion. But I appreciate the totally non-confrontational concern you’ve displayed as someone who has never met me and knows absolutely jack-**** about my medical history.
Try a netti pot. I haven’t had sinus problems since I started using one. When I feel something coming on I add a cap of hydrogen peroxide to the warm water. It stings so bad my eyes water, but I haven’t taken an OTC or prescription sinus med in almost three years.