###Human: What does bleeding after 16 days of taking emergency pill indicate? ###Assistant: Hi. I just want to be clear that no birth control pill or any family planning method that can give 100 % assurance that you will not get pregnant. It only decreases a significant percentage of the chances. So yes, she can be pregnant but if she took an emergency pill then it gives her only 75 % chance of getting pregnant. The spotting after ECP (emergency contraceptive pills), usually 5 to 10 days after is what we call withdrawal bleeding. This is expected since the hormone Progesterone in the emergency pill is so high, it can cause spotting or bleeding after. I suggest you take a pregnancy test after one week and if it is negative, then you are safe.