Endometrial Proliferation and Heavy Menstrual Bleeding Associated With Continuous Oral Contraceptive Use.

Continuous oral contraceptives are intended for three months of levonorgestrel/ethinylestradiol use followed by 10 days of low-dose ethinylestradiol. When taken for extended periods without withdrawal bleeds, side effects may include heavy menstrual bleeding and endometrial proliferation. A 41-year-old female presented to the OB-GYN clinic with two months of heavy menstrual bleeding after 10 years of Seasonique use without withdrawal bleeds (10 days of low-dose ethinylestradiol).