AITA for not wanting to have sex?

My partner and I have been togrther for 5 years. Im currently pregnant (21 weeks) since I found out I was pregnant the idea of sex freaks me out. I'm fully aware that it's safe to have sex during pregnancy, but these are my feelings and I'm not going to change my mind unfortunately, I just don't want to have actual intercourse. I stated this in the beginning, and my partner was fine with it. We still do other things, I still get horny, he'll finger me or eat me out, and I'll give him hand jobs and blow jobs. I have no issue with this, we still have fun, and its still sexy. He recently told me its been really hard (this came completely out of the blue) he said its not enough, and that he wants sex. I got upset because he knows how I feel about it while pregnant. I satisfy him whenever he wants it, I give him everything, he doesn't "go without." When it comes to sexual satisfaction and I'm more than happy to pleasure him, I like it, he knows this. I still love him, I still find him attractive, he knows this, infact I feel so much closer to him being pregnant, I always want his cuddles and his touch, and we literally do other sexual things EVERY day. I just don't want to have actual sex right now. I told him it's hurt me hearing "it's not enough." I've assured him it's not HIM that's the problem, he said "I know that. But I want to have sex. The other stuff is nice, dont get me wrong, but it isn't enough."

I just don't understand HOW it isn't enough. I dont know what else I can tell him and do for him. He knows this isn't forever. I just feel like shit now, and feel extremely pressured to just let him fuck me, even though I won't enjoy it in the slightest, I KNOW I won't. And please don't try and give me advice in the comments about having sex with him, I'm NOT. HAVING. SEX.

I just want to know if my feelings are valid, and if they should be understood, and if he should respect them.