I would go to the nearest planned parenthood, if money is a problem. They tend to be very understanding, and inexpensive. Don't let embarrassment keep you from going to the doctor regarding your health. Some things that are left untreated can cause greater problems later. Please take care of yourself and go have this checked out by a professional. And don't think the worst, it will only put more stress on you, and make your symptoms act up that much more. Good luck, and god bless!