All I can suggest is doing your research about stretching. There is a ton of controversy going on right now.
I myself am of the opinion that static stretching (going into a stretch and staying in it) can frequently do more harm than good. It pulls on the attachments of the muscle rather than the muscle belly, and can weaken said attachments. Yes, you'll see more flexibility, but you can also leave yourself prone to more injury.
I AM a fan of active stretching, such as PNF. For PNF, go into a stretch, and then use the muscle you're stretching. I'm not explaining this very well, so go here:
Regardless of what stretching method you choose, people pretty much agree unanimously that stretching should only take place AFTER a workout. Stretching cold muscles can lead to tearing.