Overreacting??

I'm 37 weeks pregnant and baby has been pushing my belly around hardcore today. A little while ago I was feeling on a spot that was sticking out more than the rest and could feel baby's spine. The midwives always talk about feeling it but this was a first for me in all 4 of my pregnancies. I thought it was so cool and rushed to tell my husband do he could feel. When I told him what he was feeling for he completely freaked out, pulled his hand away, and acted like I was doing something absolutely horrible. He kept saying he didn't want to poke his back and was yelling at me to stop touching my stomach. Not in a playful way either, he was seriously upset. It shocked me and hurt my feelings. I tried telling him that it isn't hurting baby whatsoever and that I wasn't pushing on him or putting pressure and he kept insisting that it was wrong and was getting angry with me. I wasn't even trying to get him to feel again. I just felt like I needed to defend myself because he was treating me like I was harming the baby. I finally dropped it and told him I needed to go in the other room for a few minutes to regroup. This upset him even more and he started saying the night was over and he was going to sleep in the living room because I was being unfair by needing to walk away. Then he accused me of yelling at him and refusing to stop even though I wasn't saying a word at the time and he was the one yelling. I told him his reaction to all of this makes me not want to share things about the pregnancy with him anymore and he thinks I have no right to feel that way and that I'm just being mean and overreacting and that he was justified in his reaction because I shouldn't have tried to make him do something he's "uncomfortable with". I'm honestly just really hurt by him acting like this. I feel like it's childish and insensitive but maybe I'm wrong.