Holly,
When I was in college I was a single mother of a baby, with absolutely no family support. I worked in a laundromat washing other people's cloths, while raising an infant and taking a full course load. Maybe it was because I wanted the best for my DD that I worked so hard, but I knew that if someone else did my work I would never be as competent as if I did the work myself.
I truly understand the fact that you are tired and would like some of the burden lifted. Just understand that by having someone do your work for you, that you lose the opportunity to learn for yourself. In the end you will only wind up cheating yourself.
So keep your head up, your mind focused and push yourself to do your best you can in all things! You will never regret it!