Internal tremors?

Sometimes when I wake up from naps I feel like my arms and torso are shaking, kind of like you would if you had a fever, but no visual shaking. Sometimes they’re accompanied by hot flashes and just the general feeling of not feeling great, and when I did have the flu I would mistake it a lot with having a fever.

It does give me the stomach feeling when youre anxiety would act but, but I just got up from a nap so I’m not sure, has anyone else experienced this?

Of course google is telling me I have MS or PD but I don’t think that’s the case.