There is an app for your phone called fertility tracker, its easy to use and helps you figure out your cycle. I got pregnant easy, I was really really lucky. I used ovulation kits to learn my days of fertility, and I have also heard charting your temperature too (though I didnt do that). Relax, and don't worry about it, when the time is right it will happen. Having too much sex can make the sperm less strong, having sex 3-4 days a week will make sure that there is always sperm ready for the egg.
Also get on folic acid and prenatals before your even TTC is also important. Go to your doctor and also get a pre pregnancy check up to make sure that everything is a-ok!
Hope this helps and good luck! :)