I was prescribed amoxicillin for a kidney infection and I'm scared to take it..but, the kidney infection is also causing nausea and I'm scared if I take the amoxicillian, I will get sick. I've never taken amoxicillin before and I'm kinda freaked out cause either way I'm gonna feel sick! Help!! Any suggestions? Oh,and my little sister is taking it too and says it leaves an aftertaste that tastes like vomit. Ugh.