I've been given a 3 day course of amoxicillin for a gum infection. I have only had 2 doses and already my stomach is not happy. Nausea, bloating, diarrhoea. Would switching to metronidazole be a good bet or should I stick it out. I get quite paranoid about broad spectrum antibiotics and c diff, the thought of getting it terrifies me. I've experienced antibiotic resistance first hand, which is probably why I'm so worried about it. 