i have a pain in my left leg right next to my groin its where your leg bends.. it feels like something is tight like its pinching me. and sometimes i have pains shooting down my leg i dont feel a lump or anything there i know there is a lymphnode there i brought it up to a dr and he did nothing, my mom says there is a major arterie there also and hardning of the arteries runs in my family .. it hurts the most when im laying down,what could it be and what should i do?