Trying for baby #3

Dani
I have a son by a previous relationship and I have a 4 year old with my husband. I haven't been on BC for over a year. I wouldn't say we have been continuously trying to get pregnant, but these past couple months we have tried...with no luck. I went to the doctor and everything is fine with me, I don't know what else we should do. I use this app all the time and we have sex mainly on my ovulation days. Does anyone have any recommendations