From your posts, it sounds like the sexual side of your marriage started off shaky in that the sex he initiated was something you felt uncomfortable with. You knew what you expected, he knew what he knew how to initiate.

Then work made him stressed & your pregnancy & you kept what you expected & he just dropped it when you didn't connect with what he knew & was comfortable without learning to meet your needs & adapting himself to that.....AND NOTHING PROGRESSED.

Instead you got angry & he just withdrew.

Sounds like you both need to wipe the slate clean & start over getting to know each other. Start off with just the touch affection that starts with dating again & then communicate about each others needs & wants rather than going at it as two different people approach it as a TEAM to satisfy each others needs.

Sometimes T can help but I know personally that wasn't something I could talk to my T about though I could seriously talk about the lack of emotional connection (had nothing to do with sex) but learned its what blocked me from ever wanting sex with him the last 13 years of the marriage. Didn't have sex with him the last 12 years. He turned me off so bad I didn't want to even be in the same room. Luckily we had a huge house & I could have my own section without having to have any contact. He never communicated & my anger grew so bad it became rage around him. It didn't matter by that point anyway there was no way to save the marriage by that point because I hated him. After leaving I was able to learn why he was the way he was & that I had never loved him from the beginning & he wasn't capable of love either. Asked at the end why he got married & he said "that was what people do at that age with the person they are with". I got married because I thought that an educated partner in the same field I was getting my degree in would make a good companion to live live with. Getting talked out of listening to the red flags about his personality was a big mistake though. Those issues were what kept love from ever growing in the marriage. I wanted an equal & he wasn't capable of being that equal & I fought it all those years. Instead of getting divorced, I hid in my career & then got trapped financially those last hears. Feeling trapped in a marriage is horrible.