Yellow discharge..

Yesterday my boyfriend & I got sexual for the first time. We didn't have sex, but he fingered me & etc. (I've done oral before, but it was a long time ago with my ex) Well all of today since I woke up I've been sore down there, and I have a continuous flow of liquid discharge. & so I put a tampon in and took it out & when I did my discharge was yellow.. But the discharge isn't stopping & this has never happened before and I have no idea on what to do.. & I'm 17, so I can't ask my mom or go get checked out by a proper doctor or.. Yeah.. any help is much appreciated ;/ Thanks