help af/pill/cycle

hey ladies I stopped taking my pill may 19th to try and concieve my cycle was a normal packet of pills with a 7 day break, but obviously I have not started my packet of pills this months as we are trying to conceive, I was "due" on according to my normal pill cycle on the 16th of June but I havnt come on also had bfn. How will I work out my next ovulation date? Also How long did it take you ladies to conceive when you came of your pills? ?