I’ve lost trust in my husband! Advice needed

I’m weeks away from giving birth to our second child and today was completing a birth plan with my husband. We were chatting about options etc and things seemed to be going ok. He is never the most serious and Is a poor joke teller or will try and make light of situations. He out of the blue said to me if it came down to me or our I born child he would choose our unborn child. I deep down would choose this option too however it floored me the fact that he said it. I mean he is supposed to be the one that is going to protect me and advocate for me and put me first during labour. It completely broke me that I mean that little to him that he would make such a serious decisions so flippantly. My mum is pretty much useless and I don’t have a Dad so I’m very reliant (rightly or wrongly) on my husband I feel very vulnerable and scared as my first birth was beyond horrific and I’ve been feel very emotional and all over the place atm. I just can’t believe he said it then was making me feel bad for not agreeing with him. It’s made me feel like I’m not a priority and very irreplaceable in his life and to be honest est I’ve completely lost my trust in him and don’t want him advocating for me during the birth at all. I don’t know if I’m being selfish by thinking this but I expected him to be there for me to protect me and idk am I not the love of his life? His soul mate? Should it be an easy decision to make? Am I wrong in being angry with him?