What are the side effects of inhaling halon fire extinguisher fumes?

Just about three hours ago I inhaled a good bit of halon while extinguishing an engine fire on an airplane. So far I felt very jittery and had a hightened heartbeat as if I was on way too much caffeine. I have a sliggt headache, irritated throat, cough. Immediately afterwards I wheezed for about half an hour. I also feel fatigued, this could be due to the halon displacing the oxygen in my body.