Suggest Treatment For Pain In My Groin

I HAVE A PAIN IN THE LEFT SIDE OF MY GROIN, IVE HAD IT ABOUT 3-4 DAYS. I HAVE HAD THIS BEFORE BUT IT WAS LAST YEAR WHEN I WAS TRAINING. I LIFT WEIGHTS AT THE GYM AND I DID SOME LEGS WEIGHTS WHICH IS WHY I THINK IVE GOT THE PAIN. I RUN ON THE TREADMILL BUT I DIDNT GET ANY PAIN THEN