I know that my question may belong into the hypochondriac category, but I just wanna make sure.

After racing in the German indoor champs this Sunday (1000m), overpaced and with a disappointing 3.35 I have had lung pain and a lactic acid overdose like never before. It was an uncomfortable race and due to a technical failure we had to wait 30 mins between warming up and racing.
My lungs felt almost inflamed and I coughed for 6 hours before going to bed (race was at 18.00). Next day the cough was gone but I have a sore throat since then. I am quite sure it's not asthma as....well, I don't have it and only had the feeling twice - after the Austrian indoor champs and now. (No problem in 5ks, intervals, not even 2ks) My diaphragm is sore, the muscles between the ribs as well and my mouth - everything involved in breathing.
Do you experience this? Is it possible to make lung tissue and the trachea inflammated/sore through racing? Can this really last for a few days? (Oh yeah, and I did the race at home, so in a dry, heated room with an open window). Additional info: Apparently I asked two doctors first thing (one of them a rower) and they say nothing dangerous can happen.