First cycle TTC

Tanisha • Married to my man for 10 years! Have four beautiful kids!
We have two kids! 4 and almost 2! We just started TTC baby #3!! Has anyone gotten pregnant on their first cycle? I am going off what the app says and so far my CM has been right on with those days. With my dirt two kids I never tracked anything not even my period and we got pregnant within 2-3 months of trying. Thanks!