Could I be pregnant or developing Pcos? 17 years old ?HELP?

you're 17...I hope you're not pregnant! it was a huge life change for me and im 23. seriously, you have no idea hun. i love my son more than anything, but its ALL about him now. have you taken a pregnancy test? if youre late for your period do that first. then, i suggest making a dr appt to diagnose why youre having sudden weight gain and irregular periods. i have had endometriosis and pcos, and i never had regular periods, though some women with pcos do. i did have very painful periods though...good luck!