No sex in almost one year 😞😩

The last time my husband and I had sex was in April of 2017 and he says he does not know why he "lost interest" ....I have heard this also happens to other males when their wives are pregnant (I delivered my baby in August), but honestly, it sucks! I miss being seduced, and he does not even french kiss me. I have even considered he is cheating, but he is not. I checked his phone and he is always at home. please help me.