Pregnacy help!!!!!!!!!!!!!!!!!?

i need help.i wuz suppose 2 start my period on june6th but it came a week early.i had 2 days after i wuz done.i should b startin 2day or da 6th but my z n tummy hurt,im gainin weight, n im alwayz eatin.could i b prego? also, ive had it for 2 yearz n itz never on schedual n my parents dont know any of this n im scared dat i m cause im only 16 n i feel really stupid n i havet stopped cryin for dat past week