Gynaecology & Obstetrics General 310ce282 Intermenstrual bleeding is frequent side effect seen with A Progestin-only pills during early months of use. B Combined OCPs throughout use. C Progestin-only pills resultant AUB never occurs. D Combined OCPs during early months of use. High-Yield Explanation Intermenstrual bleeding is frequent with progestin - only pills throughout use and with combined OCPs during early months of use.