I'm giving up!

After 6 years and no success I'm tired, worn out emotionally and I can't keep telling my child "maybe there will be a little sister or brother"!  I can't keep doing it to her or myself.  I've been praying but nothing.  I'm going to be 40 in 3 months...I guess it's just time to call it quits and this app has not helped me with my cycles at all!    I'm every 21 days and it goes to 22.  I'm just done!