Suggest Treatment For Trembling Feeling In My Arms And Lips

I'm a 22 year old female. About 2 months ago I noticed that my hands would tremble and shake when I would stretch my arms or yawn. I also noticed that my bottom lip would tremble like I was cold even though I wasn't. I thought it could be stress related because it was during finals, but now it seems to have gotten worse. My mouth no longer trembles but my right hand and arm still do. It doesn't happen all the time, but it is getting more frequent and severe. My right hand and arm shake when I reach for something, hold something, rotate my arm and sometimes when I'm not moving it at all. I have only noticed slight shaking with my left arm/hand. My left hand/arm hardly shakes or trembles compared to my right hand.
I have mild Cerebral Palsy but I have never had any tremors or shaking before. My CP affects my gait and balance, not muscle control. It seems odd that my CP issues would suddenly change.