I’m so worried, please help?

I’m a 17 year old male.

My muscles sometimes randomly twitch(like under the skin) and my finger sometimes jerks(very small though). This usually happens at night. I also sometimes get cramps in my feet, and this has been happening for I think almost 3 years now.

Also, sometimes my foot or hand feels tingling, this also happens more at night but sometimes my foot does this during the day.

I also think I used to have symptoms of meniere’s disease, such as slight dizziness with buzzing sound in my ear(im not too scared of meniere’s disease).

Another thing, I have something like "essential tremor"(minor trembling of my hand, which is harmless) which I went to the doctor about a while ago, and he did some tests and said there was nothing wrong but I should get a blood test, but I never got the blood test.

I’m really worried I could have multiple sclerosis, I have a doctors appointment tomorrow but I am so worried I cannot wait that long. I keep imagining getting back some mri result that says I have multiple sclerosis

I’m so worried I am so afraid I’m going to die, please help.