I've taken over 30 tests in the past 12 days and they're all negative, but I still haven't had AF. I'm now a week late and I'm never late, if anything I start the night before I'm scheduled to start! I just feel at this point I want to start my period so I can get back to <a href="https://play.google.com/store/apps/details?id=com.glow.android">tracking ovulation</a> and try again! :(