I'm 20 years old I've been having some cramping a little
I also been having brown discharge it feel like my period is about to start when I whip its brown and a little blood sometimes I stuck a qtip inside and when I pulled it out the one side of the qtip was filled with brown dark brown what could this be please help

That's just 'old' menstrual tissue and blood, which turns brown when exposed to air, even the little bit of air that is in the vagina.
Nothing to worry about, very common.
Menstruation can be any color from light pink, bright red, deep burgundy red, to brown.

I hope so it's a lot of brown I never seen this before and its been going on for three days and I haven't came on my period yet