What do I do about a Gracilis Muscle strain?

Question

I have this muscle in my leg that seems to be sore. I can still run very well and with no pain generally, but I feel a tightness when I stretch. I do walk up and down stairs with allot of weight and sometimes my knee has a sharp little pain but then it leaves. All of this occurs on my left side. It feels really good when I stretch it but I am worried that I am hurting myself. Can anyone help?

Answer 1

 http://sportsmedicine.about.com/od/flexibilityandstretching/ss/groinstretch.htm this site gives  some nice exercises wich i am doing for myseslf,hope it helps XD