A few weeks ago my doc diagnosed me with severe GERD, and has me on Esocid and two courses of antibiotics, (Clarithromycin 500MG & Metronidazole 250MG). I've been having lightheadedness, feeling dizzy and wobbly and slight chills. I've also had some small pains here and there, could this be wind build up or only side effects from the antibiotics. Also, can wind build up make me feel lightheaded and shakey?!!