Don't worry - she'll be all right.
Don't worry about phoning Ian - I'll do it later.
Don't worry about dinner, because I eat everything. (Skills for Life (Entry 1); A1; Singhalese)
Try not to worry - there's nothing you can do to change the situation.
It's silly worrying about things which are outside your control.
I'm worried about your health. (Key English Test; A2; Farsi)
It worries me that he hasn't phoned yet.
The lack of rain is starting to worry people.
Unemployment is increasing too, and today, it worries every single citizen of the world, specially the ones who live in [a] third world country. (First Certificate in English; B2; Portuguese)
health/financial worries
Keeping warm in the winter is a major worry for many old people.
My worries proved to be wrong. (First Certificate in English; B2; Greek)
She's been sick with worry.
Unemployment, bad health - all sorts of things can be a cause of worry.
You really need to spend a whole month without any kind of worry. (First Certificate in English; B2; Portuguese)