Trying to convince

I've been trying to convince for 8ish months after having a miscarriage and everytime we think I am we get our hearts broken by another failed test... we went to the gyno and he says everything is fine my levels are amazing and my husband doesn't shoot blanks either we have 3 others. We lost our baby on Thanksgiving last year and weve been trying since. Any advice from anyone on what we can do weve been tracking and having sex on the days I ovulate.