 [ Symptoms ] can you have a period for 3 days and still be pregnant my period was 2 days later then usual and it only lasted for 3 days first day was heavy then lighter the next and last day spotting when do you think i should take a pregnancy test [ Disease ] hi it is possible to go through a whole pregnancy and having periods but these are very light and do last just 3 days now as your 3 day period started with a very heavy day this could put a mark on whether your pregnant but go get tested now and see what happens good luck