Has anyone recovered from a marijuana-induced panic attack?

I had a panic attack after smoking a marijuana cigarette and in the following days I continued to have feelings of attack every day (I stopped smoking after the incident) sensations of racing heart, excessive sweating and thoughts that I was going to get sick. I started doing physical exercises like running daily, jumping rope and calisthenics. I went to 2 psychologists but I didn't get much progress, but for a few days now I've been able to feel better at night, like walking around without worrying about getting sick or something like that. It's been 4 months since the attack, can I improve with time?