What will be the consequences of taking the contraceptive pill on a day other than the first day of the cycle?

Hello. The endocrinologist recommended that I take birth control pills to compensate for hormones on the first day of the cycle. Unfortunately, I always had irregular periods, or appearing after 2-3 months. I waited 2 months for a period. He did not appear. Desperate, I took the first pill without a cycle. I will add that my goal is not to secure, but to equalize the levels of hotmon. What will be the consequences of such an action. Please advise.