worrying

I worry so much in life. I've developed something but i dont know what. I can't even be left alone without getting either an anxiety attack or a panic attack. And when I am alone i need to text the person every few minutes and if they dont reply instantly i start hyperventilating and panicking and thinking the worst thing happened to them. 

I have no clue what to do or how to get rid of it even just the tiniest bit.