That sounds more like Generalized Anxiety Disorder (GAD) (I am not a doctor, but recognize what you're talking about). I was diagnosed with it when my first wife came home from surgery with a surprise tracheostomy. I wasn't sleeping due to worry about her airway becoming obstructed and requiring regular sterile cleaning. I eventually ended up with physical symptoms - felt like my heart was pounding in my chest and I couldn't catch my breath. Xanax worked wonders for me and I was able to focus, prioritize, and feel 'normal' again. Eventually I learned how to recognize what was going on and control it without meds.