Just come back from holiday & tested again (no period, but tests had shown BFN twice) & it's shown a faint but definate BFP. I've just come off the pill & thought that it was my cycle being a bit odd whilst it settled down. I've been drinking & smoking. What have I done?? AF was due on the 14th. If I am pregnant, how will I know that everything's OK? Can't believe I've been so silly.