Anyone else - ?

I recently took my third dose of 0.25, haven't had any real side effects worth noting, but 2 days after my first dose my period came, which was about 10 days early (it was a lot lighter and shorter) and now 16 days later it's started again. I have PCOS and cycle length does vary but it hasn't ever been this short. Anyone else have cycle changes at the start? Did it continue?