hi iv had a feeling lately like my legs feel like jelly but i can stand up ok but now there starting to shake and its really scaring me could it be the start of seizures iv felt very ill all day but i have been traveling and my body cant take the fumes and it always makes me feel very sick would sedatives calm my nerves down or will make me worse.

You may want to try magnesium. It may help:

Magnesium Complex

I'm sorry to hear this is happening.