Im Linda, 23 yr old, diagnosed with PCOS,my doctor prescribed Dydrogesterone 10mg (Terolut) so I can have my periods regular again, Ive been taking it since June this year, i have to take it for 10 days in the 14 to 25, got my period 27 june till 1 july, second period 24 till 28, and now I got it 6 August until 10, and now again 17 until now 19. Id like to know if this is because of the consequences of taking this dydrogesterone or is something else? Id like someone to help me find out whats going on? anyone with PCOS? thank you so much.