was just diagnosed last wednesday with the flu, and then yesterday 5 days later was diagnosed with a sinus and ear infection. for the last couple of days i have had really bad vertigo wether I am standing or sitting, feels kinda like I am drunk all day long, and really spiking my anxiety. I was put on cefdinir but have not even been on it a full 24 hours yet. I was wondering two things. is the vertigo/dizziness normal with these infections and how long until I can expect some relief from this medication?