Generally TTC

Um I'm very new to this ... But I've been TTC since May now and I'm a little nervous, me and my SO have had sex multiple times since then twice over this past weekend which according to this app is my fertile window, and he did not pull out either time. What are the odds that I could get pregnant ? He travels for work so during the week he isn't home which doesn't give us a lot of time to actually try, only on the weekend when he is home . We really want to start a family and