Could my first period be coming?

I am 13 years old and I have been experiencing all of the changes of puberty so far except my first period. I have pubic and armpit hair, my breasts have been developing, and I have had discharge everyday for several months now. All of a sudden the discharge stopped and i have been feeling a bit irritable and emotional. Also I had a few cramps recently but they really didn't hurt at all. Please answer! thankyou(: