3 weeks ago I noticed my lips were twitching. Now my whole body is twitching what's wrong with me?

Twitching. Most likely you are very nervous and anxious. Often this is a vicious cycle--you notice one twitch, start paying attention to it, then get nervous about it, and the next thing you know is that you have another twitch. Twitches of this sort, even when occurring all over, are very seldom related to anything serious as long as you don't have weakness or abnormal mental function.