If there is any blistering, see a Doctor. If it's just red and sore, aloe vera will help quite a bit if you keep it slathered on. You bascially gave yourself a 1st to 2nd degree burn, like a bad sunburn.
I have a steamer myself, and always let it run out of steam, or sit for 30 minutes unplugged, and also point away and squeeze the trigger just to make sure it is pressure free before removing the cap.
Mt Snow, VT - May 5, 2012 - Completed!
...i remain, he who remains to be...