am i pregnant???

GLOW says i’m supposed to start my period in 3 days, and i am having white medium heavy discharge. sometimes it’s clear, sometimes it’s white. the internet says that you’re not supposed to have a lot of discharge before your period and that it means you’re probably pregnant. but i don’t think i am. i never had sex but i did let my boyfriend finger me and i’m pretty much 100% certain that he had no sperm on his fingers. idk, i’m just worried