I'm feeling super shaky inside & out. Even when I yawn it feel the inside of my body shake like when you get the chills. I can't focus & I feel dizzy & off balance like I'm gonna pass out cause my mind keeps going so fast.. I look at my hands to see if they are shaking & I worry I'm gonna have a heart attack. Have shortness of breath & the back of my neck has been hurting for a couple days now. Also has anyone ever experienced like they can't swallow & have dry mouth?! I freak out cause I can't swallow as if I forgot how to do it so I drink water to make me feel better. I can't stop worrying.