Please don't let yourself keep on feeling like this.
It's tough medicine but works...
Smoking weed regularly over time can lead to a change in affect. Long term users can develop anxiety or dissociative affects that they did not have when they began using. When pot no longer is pleasurable, it is best to give it up. There is no point in using a drug that no longer makes you happy. Some people smoke their whole lives without complications, but everyone's brain is different.
I don't think mixing the two did any permanent biochemical damage. The affects of smoking pot are subjective, and you probably now simply associate the speedy affects of THC with what sounds like a really unpleasant experience. It is likely you mixed your coke with a high THC strain. Hi CBD strains may decrease cocaine cravings.
If you were a habitual pot smoker, be careful with alcohol. Habitual use of both have been linked to the same gene.
And of course, no one should mix alcohol and cocaine. Yes, it feels good. It can also kill you.
Ive had a panic attack like that before, and if you were not an avid marijuana user at the time, then that explains your experience: you smoked too much :) Cocaine has no effect when smoked in soft form; that is why it is cooked for smoking, and is, in bigger cities, usually more pure. If you ever smoke weed again, just have 1 hit, and be in your house with good friends. its a calculable situation.