since i got my period, i've been having 'pencil thin' stools with some straining.

i'm a bit worried, but i'm young. 15.
when i was 12, i was diganosed with IBS. but i've never had a change like that, constipation sometimes, but never thin stools.

i normally have them once or twice a day, and i eat a lot. so i'm kind of worried, even though i shouldn't be for my age.

they're soft, so i don't see why i have to strain so much for something so thin/soft.

thing is, it started with my period. could this be the cause ?

and also, i have graves disease.