Feel like giving up

Kayla • 17 Married July. 23. 2016 found out I was pregnant oct.27 2016
So me an my bf have been ttc for 3 going on 4 months now an no luck. I feel like its not going to happen. I'm just hoping this is our month. Plz pray that this is our month. IDK how to feel getting my hopes up then nothing 😯😢 is there any tips lady's?