I was prescribed Bactrim for a UTI. I took it around 6 and by 8 I was face down the toilet bowl. I had some of the worst nausea and vomiting I have ever had in my life (and believe me, I had the worst morning sickness when I was pregnant. I was so bad I had to be hospitalized. This was worse than that). Even water made me vomit. I couldn't sleep. I could eat ice chips and that was it. My entire body hurt. Not very nice with a newborn to care for. I was afraid to take my next dose, but I'm toughing it out.