Are you totally nuts?
Enjoy it while it lasts!
I am assuming it is your first together. It is his way of coping and stopping himself running around in circles, screaming and hyperventilating. A lot of guys are odd that way. They can be all "we are equal partners, and you are as tough as me" until the gal gets pregnant. Then suddenly she is made of glass and spun sugar.
Relax. Take heart from the fact that he is so overjoyed that the two of you are having a child together that he is actually thinking about you. A lot.
I know it may seem demeaning in some ways - an independant woman suddenly being coddled for a basic biological function. It is not.
He can't go out and kill a dragon to prove his love for you both, so he is doing the next best thing.
And rest while you can. Rest, and me time, becomes a distant and fond memory once you are a parent.