as in PCOD
there is possibility of anovulation
, and also pills can cause anovulatory cycles, immediately after stopping the pills you may not get returning of ovulation,
but that cannot be completely ruled out also,
your period is possibly appearing as withdrawal bleeding, that too on 7th day of cycle having ovulation is rare,
so you wait for your next periods if you miss you check for pregnancy
, if comes negative you trace for ovulation with kits then plan intercourse on that days.