needing support

My husband and I are excited to be trying for our first child. Although it has always been a problem to get him to initiate the act, he has never struggled to get it on with a bit of lingerie or a blow job. As of the past month though he has no interest, he can even get hard when I go down on him. Today my ovulation kit (clear blue advance)said my LH was high, I should be peaking tomorrow and am feeling hopless that there is somthing wrong with me that will come in between our dreams of being parents. I have tried spontaneity, outfits, and just talking about how he's feeling. Any support or advice is much appreciated. I am just feeling so sad.