Ever since i've had sex i bleed everytime i get fingered?

the last time i had sex was a few months ago. and ever since then ever time i get fingered i bleed a little bit. why is this? and how do i make it stop? i wasn't a virgin last time a had sex and my cherry has been popped for almost a year. and after i get fingered it hurts a little the next day and the bleeding continues a little bit too. the guy never sees it on his fingers its not like dark blood its just red brown tinted... helppp