Someone help!

Megan • Im 19. Ready for a baby of my own. I have 2 step children one is 2 ans one is 5. Ready to have a baby of my own though.
So I was craving frozen magos. Got the frozen mangos. It helped my stomach feel better. For a little bit. More stomach cramps and now I'm constipated. Periods in 12 days even though I just had it.. Just got don't ovulating. Have had pregnancy symptoms all week. Someone please help! Negitive test yesterday. Was told it's to early.