urinary tract infection
"3 months ago I was on Macrobid for a UTI.  On the 5th day of taking it (last day), I had a hard time breathing during the night and I thought that I was catching a cold or something.  It went away fairly quickly so I didn't associate it with this antibiotic until yesterday.  I have another UTI and was prescribed Macrobid again.  It worked great in taking away my UTI the first time, so I didn't think anything of it.  Took the first dose yesterday morning with food and was fine.  Took the 2nd dose before bed with food and that's when I realized I made a mistake.  I was up ALL night because I was having a HARD time breathing.  I felt like I couldn't catch my breath.  When I got up this morning and saw the side effects.  How scary!"