I think you need to relax your muscles for a little bit, and no, you aren't a pansy lol. Some muscle problems can be terribly painful, especially when your back is involved.

Here are a few things that I think are/will solve the problem.

You need to drink much more water. Keep yourself well hydrated.
You might be vitamin deficient. Taking vitamins, plus increasing your intake of potassium, magnesium, and calcium will keep your muscles healthy and flexible.

I usually find myself with muscle problems if I am deficient, and taking some magnesium and potassium softens everything right up.

If that doesn't help, then you can go to the doctor, although I do think this isn't going to be something that you will have to take to them.... Laying off the weights for a while is probably a good idea though...taking a break and letting your muscles get back to a more healthy condition by taking the above and drinking lots of water is probably the best for them.

Hiya. I drink plenty of water and take a multivitamin ZMA daily, along with eating a large quantity of healthy food, so I can't see me being deficient.
My buddy at the gym suggested it might be a hernia, which scared the ... out of me.
Thanks for the reply muminashoe(lol.. how did you come up with that one?), I shall indeed take a break from the weights, reluctantly :'(

I hope it's not a hernia too! Not something I thought of at all. My father had a hernia operation... not fun!

Heh, my name comes from the rhyme There was an old woman who lived in a shoe and had so many children she didn't know what to do. I'm 29, but I do have 6 kids ages 7 and under....the old is taking care of itself