 [ Symptoms ] am i pregnant  i am 14 and i have had these symptoms the boy possibly cumed in me but i dont know for sure missed 2 periods and cramping bloating breast tenderness tired often nausea lower abdomen cramps odd food cravings gums bleeding more when brushing teeth and a few others [ Disease ] you will need to see an orthopedist for a thorough examination of your knee and probably an mri of that problematic joint since this problem has been going on for 2 3 years it is high time for you to get it checked out medically the school is trainer may have just guessed and a guess is not a diagnosis