I have no idea what's going on, but don't self-diagnose yourself with these labels such as OCD and PTSD. What I would look at, since you say you have a history of panic attacks, is, did anything happen before this started two weeks ago that might have triggered an outbreak of anxiety? As for seeing your doctor, it's always good to make sure you don't have a physiological basis for what you're feeling, as there are conditions that can cause what seems to be anxiety attacks. These include thyroid problems, blood sugar imbalances, hormonal imbalances, hidden viruses, and many other things. But if the doc doesn't find anything physically wrong, I would suggest, based on your history, that you get into therapy with a psychologist who specializes in anxiety treatment. It could be an episodic problem is turning into a chronic one. Good luck.