it may be due to hormonal
imbalance,the term dub.
i would like u to do urine pregnancy
test if more than a month have passed off birth control pills.
start combination of tranxmic acid and mefanemic acid 3 times a day for 3 days.
even if still bleeding u will have to start pills again.
meanwhile get your hormonal assay done.thyroid
levels and let me know.