Hi Lily, sorry your so young to have to be dealing with this. I was 28 when I was 'menopausal'.
In fact we had to stop 'trying' to conceive through I.V.F when I was 25, as despite truck loads of fertility drugs, my body just refused to play ball

I was also further informed that due to my hormone levels I was going to find it extremly 'hard' to conceive. It was apparent that despite all the fertility drugs, I just wasn't producing the eggs. Oh to be a chicken

Incidently there was a lady who was around 50 who was undertaking I.V.F at the same time as me, and who produced substantially more viable eggs. Absolute bummer. She was twice my age. Oh well at least she looked it

I'm taking it that you have not been able to have children?
I was always very 'regular' prior to my body's rebellion. I did experience hot flashes, and night sweats, and if memory serves me correctly my periods just stopped with the occassional curve ball into months

Not sure if this helps, but all the best