My only child is 6yrs old... Plz I pray!

Jen • Follower of Christ, Married the love of my life, mother to the most AMAZING daughter! Photographer & owner of Blissful Imaging Studios
My daughter will be 7 in May & I have done nothing to keep myself from getting pregnant, nor have I followed ovulation and REALLY tried. BUT, my husband and I rarely go more than two days without being intimate. I always wondered if something was wrong, we've both been checked and everything (from routine tests) show up normal. This was my first month where I started using this AWESOME app & followed it, started taking prenatal vitamins, and followed suggestions. Trying to buy get discouraged, but, I'm supposed to start in 3 days!!! When and how often should I test? Should I be hopeful? My daughter lately says she wishes she had a sibling and it breaks my heart. We really want to grow our family. Any thoughts would be MUCH appreciated!