After partaking in cocaine.. sudden and rapid swelling. starting in the face and neck. then quickly began to swell shoulders, chest and upper back?

It sounds like you had an allergic reaction to some contaminant (not the cocaine) in the product you were using. If you stop the exposure your system is likely to recover over time (days). If you re-expose it could get a lot worse, like those who die after a bee sting.

Description consistent with possible severe allergic reaction. Such reactions may require immediate treatment with Epinephrine particularly if accompanied with respiratory distress. The cause of the reaction could be contaminants or the drug. Better to seek allergy evaluation before retrying the drug

You likely had an allergic reaction to something in the stuff you consumed. Consider it a blessing, if it will get you off this destructive habit. Wish you good health!

I too would favor an allergic reaction, and would advise complete avoidance of recreational drugs in the future unless you have a "death wish", as a repeat event could produce an anaphylactic reaction. These days, drugs contain other narcotics and stimulants, and if fentanyl has been added, risk can be sky high. Get assistance with counseling and be proactive about your health.