Just need some prayers

So ladies I know that it is hard not to get frustrated with ttc. I am 17 dpo and have never made it this far without af and I am getting bfn.over the weekend I took a test and my sister said that she would take one to because I was nervous and well she is pregnant not me.. I am trying to be hopeful and I am so exited for my sister but man... I wish that could have been me.. Just need some prayers as I will do the same for you:)