Ovulation

Danielle
Hey guys ! I've been TTC for a few months and this month I have taking a ovulation  test  everyday for a week and still ..nothing ..my <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> keeps moving my peak day and I know your suppose to ovulate 14 days after your first day ..im on day 17 and still not ovulating next expected period is jan 9..im starting to lose hope ..any input ?