Idk what's wrong

So my husband and I have been together two years married almost 2 months. We lost a baby last year and were trying again. Idk what it is but I'm just not into wanting to have sex at all. Does not interest me. Mind you we both work different shifts and hardly see each other. You would think when we are together we would want to be with each other. But no we are either tired or just not in the mood to have sex (either one of us). I feel like this is eventually going to put a toll on the relationship. Any suggestions ladies on what I/we can do. I love this man more then you can imagine.