They just don't make em like they used to....

The past couple of years my body has been trying to send me a message I just don't want to accept! Fall of 2007 I fall over on my bike and hurt my knee. After a month of not healing I end up with surgery and several weeks of inactivity. No skiing for me that year. Fall of 2008 I pull a gluteal muscle (that's the politically correct name for my butt muscle) which is still hurting me over 6 months later! I have been told by a couple of people that it's mostly likely my sciatic nerve, which can take a really long time to heal. Nice. I haven't let it stop me from doing the things I enjoy, I just get to do it in pain. Sitting in church for 3 hours straight is so uncomfortable. A few weeks ago I felt the calf muscle in my right leg starting to get sore while playing tennis so I called it quits to give it a rest. Peter and I were taking lessons. The following week it was feeling just fine so we went to our lesson and were having a great time when I felt it pull. Again I had to stop and have been letting it heal. So...today, feeling great and doing lots of warming up and stretching, I set out with Peter to play some tennis on this beautiful spring day. We were having so much fun and I was actually thinking that I felt so good that maybe after tennis, (and American Idol) I would go do some running! Yay! But no....not me. As I took a swing and hit the ball, I felt a giant rock hit me in the back of my calf. I turned around to see who threw the rock at me....I knew it wasn't a tennis ball, it was too hard and it hurt too much. Then I realized it was not a rock, but my calf muscle....snapping. I did it good this time. Peter had to give me a piggy back ride to the car. I can't put any weight on it. What is going on here??? I have never been this wimpy and fragile in my life! Is this what happens when you hit 45?? It seems like I can't do anything anymore without injuring myself. I am falling apart. It's extremely depressing!! I guess it's my body's way of telling me to slow down, but I don't want to! I refuse. I am NOT a happy camper!