Ummmmmm, my OB stressed to me to take it at the same time every day, and I did....the only time I may have slipped up was New Years Day......hangover.......I had pumped loads of EBM so I could have a few wines on NYE.....so a few drinks, a nice cosy drunken canoodle, then a hangover may have been the problem. I was still v.shocked though, when I found out I was pg.........