i smoked cannabis and cigarettes for many years. 2 months ago i took a so-called panic attack. ( felt very warm and agitated and felt like i needed to leave my friends house immediatly). i got home with my heart racing very fast and eventually calmed myself down. One month ago i stopped smoking cannabis and the attacks are still occurring roughly every 3 days.. I also stopped smoking cigarettes 2 weeks ago and have been feeling funny throughout the day. I cant think straight, and today i took a bad attack on my way to work and had to turn the car around and come back home. i felt like my head was going to explode and that maybe i need psychiatric help because it was so bad. i am feeling calmer now and have booked an appointment with my GP on thursday. Can you give me any advice please??