What Causes Episodes Of Dizziness And How To Cure Them?

Hi, may I answer your health queries right now ? Please type your query here...Hello have had bronchitis twice in the last month. Last Tuesday I woke up and was dizzy getting out of bed,the dizziness lasted off and on till on Sunday I had an episode where i was walking across living room and i felt like i was falling and had to quick get on couch. then on Monday I was sitting in a chair at work got the weird feeling of falling and had to fall to floor to get stable. I went to GP who put me on antivert and is sending me to ear nose and throat guy. Any ideas what this could be?