You had me worried
Definition 1 of 1
Pro Tip 1/3Emotional Connection
This phrase often shows a speaker's deep concern for the other person, indicating a close relationship. 
You missed our meeting and you had me worried about your health!
Pro Tip 2/3Intensity Varies
The phrase's intensity can vary based on intonation and context, from mild concern to extreme anxiety. 
You stumbled, and for a moment, you had me worried.
Pro Tip 3/3Not Literally Worried
Sometimes used hyperbolically to mean 'you caught my attention' rather than actual worry. 
You had me worried with that joke; I thought you were serious!