Lower sex drive during pregnancy

Kenya

I'm finding it hard to get myself into a sexual mood throughout my pregnancy (I'm about 15 weeks). My husband has been so supportive and loving throughout everything and I want to cherish and continue to grow our physical relationship. I just can't get into the mood, and feel a bit turned off from his smell where normally it would be a turn on. Anyone else have this feeling? I'm at a loss as to what to do!