How often is too often?

Libby
My husband and I have sex every day I'm not on my period and even sometimes on days when I am- 6.5 years together and we can't keep our hands off each other, haha.
We've both been tested and his count was normal, as was everything else, but can anyone say for sure if that could be contributing to our trouble conceiving? We've been trying for a year and a half now, with a miscarriage in August.