I'm going back to thinking I've lost my period due to undereating. I did lose them during ramadan. Before that, eventhough they were irregular, they came at least once every month.
So maybe the irregularity was because i have PCOS, but i wouldn't suddenly lose my period without any sudden changes. So i think the change was definitely my undereating, and fasting at the same time.
I remember i would force myself to not eat any fried food, and i kept saying it's coz they make me feel sick, but that was a lie to myself. I did want to eat but i also want to lose weight. Sadly.
I would eat no carbs almost, like half a roti and lots of salad just to make me feel full. And just oats with fruit at before closing my fast.
Obvs i lost weight dramatically within 2 weeks and so my body probably thought it needs to stop the reproductive system co, I'm in starving. Didn't get a period that time.
The weight gain around my stomach, I've no idea why, probably PCOS. Or the fact i stopped undereating.