Hey guys thanks for all of your responses -- but I got it taken care of.
I hopped in my truck to (luckily) drive to the parts store to grab a few parts for my Mustang. Well I had the radio on, etc., and tried to roll down my windows (which also seemed to be slow to me the day before). I got the window about 3 inches down and it stopped...the radio also shut off when I hit the switch. Then, all of my gauges dropped down to zero, and the truck was losing power fast. I knew right then and there that my alternator was toast. Didn't even have the old one checked at the parts store...got one, jumped my truck and limped it home.
About an hour later, alternator was in, and everything works at the speed it should. Problem solved.