Worrying can make you depressed. Chronic worrying is moreso a symptom of anxiety, like as a symptom of generalized anxiety disorder (link here:
http://psychcentral.com/disorders/sx24.htm )
I'm not a doctor, but if it's bothering you - do you have a therapist or a doctor or someone to talk to about this?
((((((((((((((((gindy75)))))))))))))))) welcome to PC.