Can your period be late when taking birth control?

Yes. I know a few women who have gone a month without getting a period. My sister was on the Depo shot and she went almost 3 months without getting a period! I thought she was pregnant so I made her take a few tests and they were all negative. She got her period a week or so later. You can even avoid getting a period if you are on the pill by skipping the last 7 pills in the pack and starting a brand new pack right away!