period?

so saturday (11/9) i started having blood in my underwear, but like i never felt my period actually start, usually when i start i know bc it’s usually a lot of blood, ive been wearing pads bc i don’t want my underwear to get blood on them. it’s now 11/12 and im rarely seeing blood on my pads but when i use the rest room and i wipe there’s blood on the toilet paper? im 18 and don’t like using tampons , im still a virgin so ive not done anything sexual. i’m confused, any ideas? thanks!