TTC but no periods/ovulation

So we’ve been trying since last summer

I was having periods as normal for a few months and then my last period started on xmas eve!!

I haven’t had a period this year.

I don’t know why?!

I’ve done a test every month, last one being 2 days ago and all are negative.

I’ve tried doing ovulation tests and even they aren’t saying that I’m ovulating.

I was tested for PCOS about 2 years ago and docs never said anything so just guessed it wasn’t an issue, now I’m starting to thing theres something wrong with me 😔😔

Anyone had the same issues or any advice? Xx