I don't know if I can help much other than keep it pointed in a safe direction, and preferably outside until you get it fixed. Did you try dropping the magazine, and just firing the last round? Did the slide lock up while shooting? Maybe give us a few more details and some of the experts will be able to help out.
Same experience with a Steyr M 40 would not fire would not cycle or rack if ya prefer ended wth me keeping the trigger depressed so that the striker was disengaged pulling the slide off... Yes a live round was still present and placeing the slide up side down in a vise keeping saftey first in shop area using a mallet and a brass punch knocked the barrel up pulled out slide bar and main spring dumped the live round out of barrel then Thanked God and cleaned out my shorts found bits of brass was the culprit Federal Ammo (Factory) is off my list I use Remington UMCs