PLEASE HELP ME

Ellie
I previously said 
Okay so Ik that iuds aren't supposed to come out or loose or anything but a while ago my boyfriend and I were getting freaky and I felt insane pain and I thought it got fucked up but then I was like wait no it can't and now my period is weird like I didktn acturallynget the blood and when I went to the bathroom just now there was pink stuff on the paper. I am so fucking scared since I'm still young and trying to keep sex away from my mom. Please help w any info 
Now my period still isn't here. It's pretty itchy down there. I keep having toilet paper just come off into my outer Labia(?) idk what to ducking do. It's not bloody but something is in my vag cause if I take the paper and wipe by the opening I get this pink milky mixture. I really idk what to do. Ik I need to make an appointment but I'm -5 and my mom doesn't know I regularly have sex w my long term bf she already doesn't like. 
PLEASE PLEASE PRETTTY PLEASE JUST HELO ME