you should worry!
There's absolutely no reason for you to be worried. A: "I just feel like I could get fired at any moment." B: "You should worry! The boss just gave you a promotion, why would he turn around and fire you?"
ˈyou should worry!
(informal) used for telling somebody that they have no need to worry: You think you’re going to fail the exam! You should worry! You’re the best in the class.