Ladies i need you to help me plz

So i notice my fiance been acting wierd but not to wierd. I know he smoke weed but i have no idea i started getting a feeling he is doing something else. So i just happend to look in his pants & found a very small bag with white powder & a dollar rolled up like people use to sniff cocaine now i am not very familar with drugs. So i have no idea what to think is that cocaine or can it be anything else ? 😢😢 ugh to early for this