###Human: My period is irregular as I skipped placebo pills before a month. Kindly advice. ###Assistant: Hello. Yes, what you are experiencing is very common, especially if you have been on the pills for a while. The birth control pill will actually thin the lining of the uterus over time, and many women barely have any bleeding during the placebo week, we sometimes call these pill periods as it is often just some very light spotting or brown discharge. It is ok if you do not have bleeding during the placebo week, as long as you have been taking your pills every day and you are sure you are not pregnant.