Welcome Ralph.
Congrats on more then three weeks of no smoking! An increase in anxiety is very common during a quit. I know that doesn't make the panic attacks any easier though. Have you had panic attacks before? How do you try to calm yourself when you are having a panic attack?
My suggestion: Remind yourself that panic attacks usually do not last longer then 20 minutes. The panic will pass. Remind yourself that the panic attack is a feeling and it cannot hurt you. Breath deeply. Ground yourself with your senses:
Look for 5 different colours
Listen for 4 distinct sounds
Touch 3 different sensations (example, clap your hands, touch something soft)
Smell 2 different smells
Taste 1 thing (I suggest water or decafinated tea)
I hope this helps! Also, you may want to check out our sister site https://evolutionhealth.care/index. This website contains a free, self guided, Cognitive Behaviour Therapy(CBT) program for depression and anxiety. It also has two corresponding support groups. I highly recommend. CBT is the most evidence based treatment for anxiety. If you are better able to control your anxiety day-to-day then you will be less likely to have a panic attacks. The program and support group can help you achieve this.
How are you feeling today?
Ashley, Health Educator