im 21, i have always had a lot of hair, and i bought rogaine to put it above my temples so i could get a more boyish, or femine hairline, i didnt like my adult M hairline, anyway ive been using Rogaine for 3 months and it is working my hair line looks like a girls, like an O, not an M ... haha, but i seem to be shedding when i run conditioner through my hair in the shower.. should i not have used Rogaine since i didnt really need it? now im afriad i do need it... ahh

From what i'v read about Rogaine, you will shred hair the first few months you take it.
It takes like 6 to 9 months to see if any hair grows.
In your situation i would stop taking it.
I'v read stories how people take Rogaine and it didn't work.
They just shred hair.
In most cases the hair will grow back.