I think jo_thorne has given the perfect answer,which is what I wanted to say.So I will not repeat it.But I want to add something-it is about your GAD.If you can control that then you will not worry so much about such things-they happen,but you have to immune yourself from such triggers.
Here is one post out of many which I wrote about GAD.It may help you
JEETE RAHO: Three ways of defeating # General Anxiety Disorder