I don't feel like doing anything. what is wrong with me and how can i fix it? would medication help?

Many possibilities: You don't indicate how long this has been going on, when it started, and whether it's all the time or some of the time. You are right that it's not how you should be. Consider starting with a thorough physical exam and lab tests; if they are normal, then meet with a psychologist or psychiatrist to see if you have a disorder like depression or are reacting to stressors in your life. Seek help.