Monsterfromid go to your GP.
Shaking for 90% of the time must be absolutely knackering, there's no way to rest.
If the surgery give you any grief about whether it's an emergency, describe your situation, including your medical history and background. Tell them you need some rest, ask what they would suggest. If they say wait to see a GP, get the persons name and say you are documenting their response.
Hope you get something sorted out.