The hair loss could be stress related, I suffer from GAD and never had that problem.
The acid reflux yes, you can have that as a symptom of GAD.
The restless sleep as well, broken sleep is when you wake up a few times a night for no reason.
I've dealt with that many times, and it's frustrating.
As for the bathroom breaks, i'd watch that, sometimes excessive peeing can be a sign on diabetes... if it's the other kind of bathroom break then it can be anxiety, or IBS.
I'm not too sure about the abdominal pain. What kind of pain is it?
Restlessness in general is also a symptom, been there as well.
Hope that helps you FL85.... Take care.