Anxiety/Panic Attacks

Tiffani
Has anyone experienced panic/anxiety attacks while pregnant? Mine seem to come from what I can only assume is over stimulation of the senses. It usually happens when I'm in a big crowd or when there are too many sounds and smells. It always starts with what I can only explain as an adrenalin rush, then my mind seems to repeat like a broken record, dizziness, panic, breathing difficulties... Etc. 
I already have ADHD, which seems to be 10x worse but now to add the attacks.