Feels like it's never going to happen

Me and my husband have been trying for a baby for the best part of a year now. Each month the awful lady in red makes an appearance, but this month is different she's 6 days late and after 2 tests there both showing bfn with no signs of anything. All my friends have fallen pregnant without trying or within the first month of trying and as stupid as it sounds right now I feel like I'm letting my husband down.