Hi everyone my name is Ricardo

So lately I've been having like the worst anxiety symptoms IMO, I pm constantly dizzy or lightheaded and I'm scared, anyone have this p, anyone can help me?
Also every time I go to bed my body jerks before falling asleep, I'm only 20 years old and always thinking I'm gonna die, I don't want to live like this, help please!
With the dizziness and lightheadedness is simply, I'm walking or seating and when I turn my head I feel weird and then I start getting panicky and don't know what to do? Please help me or share just want my life back