please help!?!??

i’ve went to the bathroom twice today, once this morning and when i got home from school and this was hanging out of my vagina after i peed????? i know it’s mucus but i’ve never had this much. i am sexually active but i’m on the pill and i take it religiously but i was late one day early in september but that’s all. we use condoms and he doesn’t cum inside of me. i’m supposed to get my period next tuesday. please help??? i also had sex today and it was protected. PLEASE HELP!!!