I highly recommend downloading an ovulation tracking app a few months before you try to get pregnant. Heck, they’re actually pretty helpful when you’re trying not to get pregnant, too! All you have to do is plug in your period days and the app will show you a calendar highlighting your fertile window and when you can expect your next period. I’m a big fan of the Glow app. It’s easy to use and shows you your chance of getting pregnant each day. The app will do as much or as little as you would like. While I only use it to get an idea of when I’ll be ovulating, you can enter even more information to get more exact results.