Diagnosed with staff infection, took one pill last night two hour...

Diagnosed with staff infection, took one pill last night two hours after eating, sat up in bed reading and went to sleep no problem. Today, ate two cereal bard at 6:30 a.m., and then took the pill at 9:00 with water. I became extremely hot and nauseated about 10 minutes later and drinking water did not help. The nausea was so bad that I could hardly keep vomiting and it has not subsided. I do not have a weak stomach and have never experienced this degree of nausea with any antibiotic.