No BFP 😢

So i'm 8 dpo and took a preg test today and is showed us a BFN. I'm not totally upset about this because it would have been a surprise, unexpected but welcome surprise, but now I'm worried because we did BD on my most 'fertile day' according to this app and still negative. (this happen once previously same story, we BD'd on my most fertile day and a big fat N showed up) I know 2 cycles aren't much to go on but it still makes me feel uneasy if this is what our future holds.We try and get the BFN as a result. Oh, on a side note my husband just told me tonight that the next level of his job that we were expecting to be stage we would need to to get our home and start a family would not be what we expected so a 6 month wait just turned into a 18 month wait at a minimum. One more thing for me to worry about I guess.