I've had cold symptoms for about a week now with stuffy nose, headache, fatigue, and coughing. My coughing got worse and I was coughing a lot up so I ended up going to the doctor thinking I may have walking pneumonia. She gave me an antibiotic a few days ago and I've been taking it twice a day. This morning I woke up feeling a little better ate a small breakfast and then took the antibiotic. About 2 hours later I felt extremely dizzy, hot, and nauseous. I ended up throwing up and ever since then I feel awful. Mainly really dizzy and kind of out of it..I have no idea what's goof in with me. Any suggestions?