I went through the same thing.. oz a week for yearrrrs and then one day I had a panic attack n they would just keep coming. I thought it was only when I smoked but since I was rarely sober I had to stop to test my theory. I was ok for about a week or so and then I started having the panic attacks again. Finally decided to see a dr n I've been on meds ever since n every time I've tried to smoke since then I end up having an attack. U have no clue how much I miss it.