Hello Thank you for your query. Sometimes, return to ovulation after stopping birth control pills ( particularly since you have been using it for years ) might take upto a few months. Hormonal tests can confirm if this is so. Also, you might be suffering from PCOS ( polycystic ovarian syndrome ), in which case the hormonal imbalance is caused by multiple small follicles in the ovaries, none of which ovulate, resulting in irregular cycles and anovulation. Thyroid hormone disorder, anxiety, stress, rapid fluctuations in weight etc also might cause such a picture. You need detailed hormonal evaluation, ultrasound, biochemical tests to confirm the diagnosis. Consult an infertility specialist / endocrinologist for the same. Also, since you are having irregular cycles, you might be having delayed ovulation/ no ovulation. It is better to undergo follicular monitoring instead of repeated ovulation tests. Take care.