Wow, that's a sad situation.
I think there are lots of things going on. First of all your husband sounds depressed - could it be the house arrest?
The other thing is your communication is so low, that you need to make the most of things. You want more intimacy, but you say when he initiates it lacks all finesse.
Until your mutual communication skills are better, you have to go with what you've got. His saying "let's get naked" is the best he can manage right now. Why not try meeting his request with enthusiasm?
H: "Let's get naked"
Try to be exciting, and get excited. You can only improve something if you have it. If you shut down, you won't have anything to work on. So don't shut down, work with what little "romance" he gives you. Over time, you can show him what you want, but if you shut down, you will never reach that point.
As for being pregnant - that is when a woman is in full bloom. Very feminine indeed