I was prescribed Erythromycin for a tooth infection. I am allergic to amoxicillin and penicillin. I have NEVER been put on Erythromycin for an infection. I usually get Zithromax or Clindamycin. Anyway, I take my antibiotic after every general meal time. This morning I had 3 pancakes from McDonald's, and I felt satisfyingly full. About an hour and a half later, my stomach is growling!! Like I haven't eaten in days!! It's so annoying...because I'm NOT hungry, but my body is saying something different!! Anyone else have this problem??