I HAVE THIS WERID PAIN ON THE LEFT SIDE OF MY GROIN ITS REALLY UNCOMFORTABLE AND I DONT KNOW WHAT ITS FROM. IT STARTED HURTING THE LAST TIME I HAD SEX WITH MY GIRLFRIEND AND THAT WAS A WEEK AGO. ITS A PAIN OF THE LEFT SIDE OF MY GOIN AND IT HURTS WHEN I TENSE MY ASS OR GET HARD AND I AM ONLY 15 SO I AM KINDA WORRIED CAN YOU HELP ME PLEASE.