I have pcos and trying to conceive. I took letoval 2.5 my tab from 3rd to 7th day along with ovacare forte and mcbm69. And again from letoval from 9th day to 11th day. Now my periods are missed for 6th day. please tell what will be the reason for not getting periods. Are your periods regular? No have you ever taken any type of hormonal treatment in the past? Yes what is your preferred method of contraception? Oral contraceptive pills have you ever had an abortion in the past? No do any suffer from any of the following disease? Ovarian cyst.