only one pink line AGAIN!

Well it looks like once again I'm only going to see 1 pink line on the EPT 😩!  Now it's on to the 21st month if TTC. This is starting to get way to hard emotionally... every month I get more and more discouraged that I will never get the 2 pink lines I wish and pray so much to see. I start telling myself I'll never have a family and I'll never be able to give my husband the chance to be a father.. I feel like such a failure as a women, a wife, a daughter. I'm ready to give up and just except that my life long dream of raising a family will never happen.... I'm so tired I just don't know what to think anymore, I don't know how to fake the smile when someone asks when we are going to start having kids.. I seriously just want to cry. 
Just had to get that off my chest so I can go out and try to tackle this day..