not all vaginal discharges are related to a disease process. the vagina secretes a variety of mucous fluids that can indeed be white. hopefully you and your boyfriend are using condoms and if you plan on continuing your sexual activity you need to consider a secondary form of contraception as well. parents are not as stupid as they appear. they were teenagers too. if you are going to make adult decisions like having sex then take it one adult step further and open up to your parents. this is your decision of course since you do have options of seeking confidential medical treatment and contraception without parental consent. you cannot be diagnosed blindly over the internet based solely on your brief description nor can you be treated so the ball is in your court. if you are worried then seek care. if you are wise you would ask your parents for help. they can take you for medical care and you can ask for this visit to be "private". medical providers cannot legally reveal to your parents that you are sexually involved.
i don't know what i have. i have a white discharge it statred a day or two ago. its not smelly and i'm not itchy. i don't know if this has to do with having sex or not but my boyfriend and i are our firsts i have never experienced this before and i'm scared mainly because i'm 16 and i'm afraid to tell my mom because she doesn't know i'm sexually active