How do you start getting regular periods with PCOS - TTC

Hi,

I am TTC but I have zero to none periods! I can go like 10months without having one and then when I do it's not like a normal period, just a bit of brown stuff(old blood the doctor's have called it).

I got married in November and started taking vitD3 tablets which on my honeymoon I got actually for a period and then the next 2 months continued getting a period! I thought omg yes this is it, I went to the doctor's to just let them know we're trying so I had it on my records and he told me to start taking folic acid. Month 4 came and there's been no period and a negative pregnancy test 😔 also can I just say we have actually been trying since April last year but without a period I know I've not got a chance.

Does anyone have any recommendations or tips on how to start getting regular periods please!!! 😭