Can't stop sleeping

I can't seem to stop sleeping. I've been sleeping for 18-20 hours a day. I don't understand why. I know I'm severely depressed but I haven't had a med change in a few months. It's been like this for over a month. It takes me hours to get out of bed. My husband is trying to help me wake up by opening the curtains and taking away the blankets, and I'm still so tired. I cannot function, I can barely make myself food when I am actually awake. I just want to be normal and live like a normal person, but I'm literally sleeping away my life. It's actually depressing me more to think about it. I cant win.