I want to end my engagement barely 2wks PP

My baby will be two weeks come Friday and I feel like leaving her dad which is my fiancé. I kinda felt like this when I was still pregnant and now since giving birth I don’t want to be bothered 😕 My mom thinks maybe it’s hormones,but honestly I feel bored and like the spark can’t be rekindled. He recently told me he’s happy I have him a family and he’s in love with me,but for the life of me I don’t want to be affectionate at all ! Am I going crazy or has the love really left the relationship ..