Donna,
I love it when you wake up
Take it EASY on those joints... Especially if you've been on winnie. I totally agree with Zed about the gelatin (there are some good "joint support" powders they sell at Whole Foods here). I think also make sure your diet is on point and I'd get some Vitamin C (you need it with the gelatin to build cartilage and other joint tissues) if you're not already taking it. The water is a key point too.
Be careful benching without a spot. That's how I tore my rotator cuff a while back. Something to think about: when we train for strength our joints can't always keep up with our muscles. Your body is already sending you signals that you're at that boundary. You can still grow and get stronger without maxxing out every time. Focus on form. Lift safe. I need you to keep posting great workouts for a long time!!! ;p
xo, C