Being that a cold is caused by a virus, you can only treat the symptoms. So, these are things that helped me. I take Advil for aches and pains, an antihistamine for my runny nose, if I keep my nose and sinuses clear I'm not as miserable and I don't tend to get a secondary infection. I drink a lot of fluids to flush out toxins, take a couple tabs of vitamin C, and rest a lot. If I fight it or ignore it, it tends to take longer to get over.
Feel better soon.