Regular cycles gone bad

Hi all I got diagnosed with PCOS around 3years ago now.

I have always been petite with regular cycles but recently I've put on a bit of weight (I needed to as I looked unhealthy and too thin).

I feel better with my body but now my cycles are all over the place!

They used to be 28-32 but now it can be a couple months before I get my period!

Does anyone know why this has changed or had anyone gone through anything similar?

I'm TTC also and feel this is going to make things even harder! 😞😔 I keep getting pain/ twinges in my ovarys too could this be the cysts and is that anything to worry about?