Anxiety Spiral -What gets you out of it?

I am currently in an anxiety spiral. 29wk and I have decided today is the day to play the "what if" game. I'm currently fixated on things that I have done wrong while pregnant. I had a few of the Recess drinks and a few energy drinks. I woke up in my stomach this am. I am on an Wellbutrin for ADHD. I'm so worried about a negative long term impact on my kid. The meds are prescribed and approved by my OB and I am not currently using energy drinks or anything. I realize what's done is done, but I can't stop googling.

What do you all do when your feeling crazy anxiety? I tried to walk but it's way too hot.