It is important that you go to the doctor, because
a lot of times we think it is
a yeast infection and
treat it as such, but in the end, it was something else. And yes, as a virgin, you can still get several different infections - even STD's if you are "playing" around with a guy and you have skin to skin contact without penetration. So, at the end of the day, I think you should tell mom and then go to the dr. just to be safe.
Good luck to ya.