I Have A Very Sharp Needle Poking Pain Behind My

I have a very sharp needle poking pain behind my left calf. Also have some vein issues behind the left knee I need to have checked could they be related? When I wrap my calf very tightly the pain subsides but after using the treadmill or any jumping exercise the pain will start again on and off. Do veins snap and break in your legs? Thats kind of like what it also feels like.