You should discuss with family members and talk with a doctor.
How do you know your body is shaking when you are asleep? Someone tell you that?
There are many things that could be causing the problems/symptoms. You need to talk with a doctor I believe.
Your symptoms send up red flags. Especially the weakness in your left hand. If you are able to see a doctor, I would. Especially a Cardiologist. It would be good to address this problem as soon as possible to make sure it is not dangerous to your long term health.
Good luck sujay.