Did you do anything different the month you got your bfp
Number 1 happened in month 5 of trying - and it was the one month we'd decided to just relax and not really try, enjoy the christmas period and not think about babies. Got BFP new year's eve.
Hope it happens soon for you, but try to relax, have a break, go on holiday and you never know it might just happen without you realising! Good luck xxx