Late period, I have discharge and slight cramping, but don't think i am pregnant

My last period was 2/27/2015 and the last time i had sex was 2/13/15. We used a condom and he pulled out early. I have been feeling bloated and had slight cramping on and off for a few days. There is also a heavy discharge. The only thing that has recently changed that could affect my cycle would be my stress level. I went from not working or taking classes to taking 3 classes and working 60 hours straight a week (monday-friday).