Omnicef and fridge

I took my first (and only) dose of Omnicef 4 days ago for a sinus infection and have not stopped having tummy problems. The smell or even thought of food makes me want to vomit, I have constant non-stop diarrhea. I feel woozy and sweaty and like I am going to faint. I'm very thirsty and tired. My stomach is contantly rubmling and cramping and feels gassy but is much much worse. This prescription cost so much and only caused me more pain and trouble. Pepto-Bismol has not helped. PLEASE REFUSE TO TAKE OMNICEF IF YOUR DR. PRESCRIBES. I'd take a sinus infection over this any day. It terrifies me to think this is being prescribed for children...I am 34 and can not image what it must be like for a little one to have to go through this. I am going to find out what I can do NATURALLY to fix my stomach problems and take care of my sinus infection. Monday I'll look for a NATUROPATHIC PHYSICIAN to consult with in the future! P.S. The person who recommended taking a PROBIOTIC was right. I am going to begin taking ACIDOPHILUS.