Suggest Treatment For Intestinal Worms

Hi, I m really paranoid about intestinal worms. I don t know for sure if I have one, or if it is my mind just messing with me. I know it s odd but just some things have happened that scared me, like I saw some green small worm swimming in the ocean in key west. I recently went on vacation there. And since I have been really paranoid and scared I looked at my stool in the toilet and saw a little round thing next to my stool, I know it could be stool or some food that haven t digested well, but it could have also been a worm. And it moved to the right which may have been because of the movement in the water, caused by the splashing of the stool that has landed in the toilet. I know I sound odd but intestinal worms have made me paranoid for 3 years and every now and then there is a trigger that basically makes me even more paranoid for a series of days or even months. Please help me find out if I have intestinal worms...