Desperate for advice. Not attracted to my husband anymore...

My husband and I have only been together for 4 years, married for 3 of those. We have a 2 year old and i’m 30 weeks pregnant. For about a year and a half I have been extremely struggling to feel connected to my husband. I love him a lot, but I don’t feel like i’m “in love” with him. He’s an amazing father and honestly, he’s an amazing husband. He bends over backwards to do anything for me. I just don’t know what is going on with me...I can’t remember the last time we kissed. It’s had to have been at least a year. Sex is always the worst. I don’t think that it’s him, I know he can turn me on. He used to make me SO turned on and satisfied. I think I won’t let him now. Like I just completely shut him down. I don’t like when he touches me, I don’t like to look at him naked anymore. I feel like such an awful person/wife. I miss him so much during the day and when he gets home I just can’t even stand to listen to him talk. A little more than a year ago we discussed divorce and we were very close to it. He said he would work on whatever he needed to to keep his family together and that he loves me more than anything. I just think i’m the problem, not him. I want this marriage to work. I want to be attracted to him, I want to be affectionate. I miss how we used to be. I miss hugs and kisses. I miss enjoying sex with him. Why do I continue to hold myself back? Is this postpartum depression? Is this how you feel after having a baby? I know she’s almost 2 now, I don’t know how long postpartum depression lasts. Before we had our daughter, we were all over each other, happiest both of us have ever been before. I don’t know what to do. I have told him how I feel and i’ve said everything to him I said in this post but he still thinks he’s the problem and that i’m just not in love with him anymore. What is wrong with me?