Hey Matt,
Welcome Matt

I agree that a second opinion may be good for this situation. I have both PTSD & generalised anxiety, but both for very different reasons.
I'm not saying you do or don't have PTSD, I'm not qualified to do that. I just think it needs more investigation because as Perna has pointed out anxiety disorders have been mistaken many times for PTSD and you don't need a misdiagnosis if you are to get well,
Rhian