Ok i have a few symptoms that i will start my first period i think. plzz help?

Ok Im 12 yrs old nd have not had my period yet. So these r signs I think I will start soon: I have hair around my breast is that normal, I sweat alott under my arms, breast have not grown that much, I get a little stomach ache below my belly button can that be cramps?, I have white /clear/a light brown discharge, I have hair on my legs, my underarms, nd down there. My mom started when she was 13 nd I will be 13 in a couple of months.will I start soon......... PLZZZ TELL ME CUZ I'M TIRED OF THIS!!!!!