Frustrated

This would be my 3rd baby, but 1st that I actually tried for. My first two pregnancies were total surprises. The first one I was even on birth control! I have two boys that are 18 months apart, ages 2 and 3 now. We decided we are ready for another and we would actually try for this one! So we’ve been excited thinking it would just happen right away because of how easily I’ve gotten pregnant the last two times. Well, we are now on our 4th month of trying. I’m 4 days before my period right now, and testing negative today. Just feeling discouraged and confused 😕