Am i Pregnant? i really feel i am..?

my period would supposedly come this 15,but im having it last nyt, a little brown spot, and today its bleeding lightly. (but b4 that, we had 6 days before my period last month,unprotected..we seldom use condoms, and for the past few days up to now, i really am feeling pregnant coz i gained weight and my appetite goes up, i eat foods i see on my fridge, im fatigue, my was so tender, but not too much now, i had leg cramps,i had a nosebleed 2 weeks ago..my back aches,i feel nauseous sometimes.. can anyone tell me what is this?am pregnant? PLEASE TELL ME I AM..as i have been waiting for that moment for so long.