I'm a parent of three and i'm going to say something that is not very popular: Despite the biological connection, despite the bonds that have been built etc, i do not think the love for our children is supposed to be the pinnacle of human existence.
I don't think it was ever designed to be except in the context that in a dangerous situation you would probably save them first before anyone else. (hey our species has got to survive right?) I think actually it is on equal footing with all of the other necessary and loving relationships we have in life, friends, significant other, other family, or even your spiritual relationship if you are into all that.
I know its super hard to not see your child as much, but this likely only for a season and it will pass. Someday she will also think her parents are boring and want to spend most of her time with he friends if allowed, that is just part of life. Then sometime later she won't be able to get enough of you as a young adult, because you have answered life questions that she has not yet. Also she will want money, they always want money

Our goal is to love those cute little beings and raise them to be adults and make their way in the world. We have to get our relationship sustenance from ALL of our relationships.
Your boyfriend is feeling hurt because of the expression of your feelings, that is only sort of ok and at some level its not, but it is upon you to reassure him and move forward with him if you both want. He sounds like he has been pretty supportive. He probably doesn't want you to feel nothing but he wants to feel loved fiercely and to be a big bunch of your life's focus. Can't blame him for that, you seem like a pretty special person.
So yeah you are probably going to have to control your emotions in such situations a bit more or channel that energy in other directions to reassure him (at least that is my very basic assessment from what you have described). In that give in take, he will probably become better equipped to understand your feelings and feel less threatened by them.
(Can you tell i have had a lot of therapy ?, i hope all that money went to some good use )