hi i'm 17 years old and i started my periods properly at around 13 years of age and they were really irregular to start off with (ie two per year) but then they went regular for about a year and a half - two years. but recently i've started losing weight and my last period was in august. i sort of had one last month but it was so light that i don't know if it counts. i weigh around 9 stone 6 but my mum keeps saying that if i put weight on, then they'll regulate but i'm really scared of putting weight on and i think there may be an issue there too. i'm terrified of going to the doctors incase they examine me or if i'm unfertile. please help, i'm terrified. thankyou.