Wow, I was really worried as it took me a long time to conceive with my first child and I am still breast feeding him so thought this time would be a bit of a struggle, I used the <a href="https://play.google.com/store/apps/details?id=com.glow.android">Glow app</a> for one month and it has worked, I'm pregnant, can't praise this app enough! Obviously my partner and I helped too X