Is it bad to sleep a lot?!

I sleep a lot. Im in college full time and the organic chemistry and the advanced calculus is extremely annoying. Im doing hw so much, that sometimes I miss a day to take a shower, and my hair sometimes gets really long. I also get a good amount of working out each week in order to become more fit and better at basketball. Im also going through some really really tough family issues. I don't feel so stressed out though, but maybe I am.