Talk to Gynecologist on Took Ecp Once In A Month

I took two ecp last month and than got my periods a week earlier and now this month i took knly one ecp is there any chance of side affect and i also want to conceive after two month i am also taking folic acid it will affect my fertility? I am not using any combined pill i only use ecp 1,2 times in a month from 8,9 months because my doctor said combine pill have side affects thats why so i pnly use ecp 1,2 times in a month if needed is there any chance of side affect? And my second question is i use ecp after 3 days of ovulation is it effective?