You're life sounds a lot like mine. I am a second year nursing student in an ADN program. My program is accelerated, so I start a new quarter every 10 weeks. Although I love nursing, I find myself overwhelmed, and just done with it some days. Come to think of it, most of my classmates are going through the same thing. I failed microbiology as well. In my program we need a B or better to pass. I missed it by a half point. Although I passed Med/Surg II, I had to sit out of Gerontology and retake Micro. I had to wait 6 months to retake Micro, because it is not offered every semester. I was supposed to be graduating December 2014, but now I won't be done until June 2015. I know it sucks, but nursing is what I was born to do. Don't worry. You're living the life of a typical nursing student. Just prioritize, study hard, take time out for your self, and you will be okay.