DISAPPOINTED

My fiance & i have been ttc for about 3 months now ( i know that's not very long ) but im am struggling so hard with the negative test results. Everytime i see that ONE solid line its gets harder & harder to swallow , how do we do it ? How do we stay positive ? How do we not lose hope ? I need to know because i dont know how many more times I can feel like this. I have no children im 22 yrs old never been on birth control i have regular periods never missed any never been late. I track my period on 4 different tracker apps & i use the clearblue digital ovulation test so i know when my high & peak days are... i just dont understand why im not getting pregnant 😪😪😪💔💔💔💔💔