Those could be worms. Don't worry they are treatable. You should go to your doctor and have them prescribe a medication for you. Thousands of people get those every year. You can get worms from just about anything, a candy bar, food not cooked all the way and from restaurants, if they don't cook food all the way. Remember, I am not a professional but I would not wait a month...........just see you PCP.
Good luck
Kitt