is age really a factor?

this is mine and my bfs first month trying and I'm 3dpo (from what the app says) and I'm so nervous. I really want another baby and he wants a baby.. I feel like the fact that I'm 29 may affect me getting pregnant bc I was 26 when I got pregnant with my son and feel like that was just luck.. anyone else in the same boat or has any of you older ladies gotten lucky enough the first few cycles? some encouragement would be great. thanks girls.