I know how frustrating it is, but the games not over

this month/next month and so on could be your month, Only half of all couples would concieved in the time youve been trying

You'll have your bfp
Maybe your OH could try and drink coffee, it helps increase sperm motility and endurance

Theres so many things you can try...also preseed, which I've seen from sucess stories is really helpful
I am ttc also and just had a miscarriage, waiting to test at a respectable time atm, hoping for that bfp. Had to three bfns so far but didnt get my previous bfp till 17dpo...im only 12 now :P (Im a poas addict)
I wish you all the best and pray that you get your bfp soon!
Sticky baby dust! x