.my wife is a 30 year old woman. we use ld tablet foe preventing from pregnancy. after 3 months eratig ld completely, this months she fotgot eating tablet in 3rd day and never eat it. and she ate ld tablet in 11st day with 12 hours delay(instead of 10 night, tomorow of that day ate it) the other lds are eating correctley. we had several un protected sex in this period. now is day 13. is there any chance for pregnancy in this time? when we can sure from not pregnancy? should we use any other pregnancy method in these period? at last she eats azitromaisin tablet every night for her cold in recent nights