Yes, that is a bad reaction...and you really shouldn't try that type of med again, imo. I have allergic reactions to meds most of the time (over my whole life) so I really am a pro in knowing this stuff. I'm sorry you're learning about it too

How quickly did the reaction occur? I think if it's within a short time, that the next med you try, you stay around for that length of time, or have a Plan B with the doctor ahead of time. We don't want you having majorly bad reactions that affect your breathing or heart, now do we???

I hope the healing will be all you want and need it to be, as you are surely paying for the procedure.