Re: Need help please!
Please go to a doctor and get it looked at and/or tested, for an accurate diagnosis. Ask them what they think it is. Let them know all of your symptoms, sexual history, etc.
If you don't have medical insurance, call a clinic (such as Planned Parenthood in the U.S.A) and ask when you can come in for STD testing and ask about their payment options.
Sometimes these things turn out to be different from what you assume, so definitely get a professional medical diagnosis.