I would advise you to rest as well. I've been lifting on and off since 8th grade and dealt with the 'burn' plenty of times. However, as has been stated in this thread, if you're experiencing weakness on that level, losing power in lifts, etc. It's quite possible you tore something or overworked the muscle. If you want to keep lifting just focus more on lower body for a couple of days, or you could do some abdominal workouts as well.
~Lane~
