I'm in exactly the same boat (I actually came onto this board hoping to get some advice), only that I'm not pregnant at the moment, and not married (but living in a long-term relationship with the father of my children).
It is really starting to get to me, and eat away at me, and I feel terribly unsettled and unhappy and... well, there's just something missing, and I feel as though I'm ignoring a huge part of who I really am. Not to mention that sex is getting more and more unbearable and infrequent, which isn't fair on him.
Feel free to PM or email me if you want. I'd like to talk more, but I'm not entirely comfortable doing so on a public forum. I'm not sure that there is an answer, but it certainly helps to talk about it.
((( HUGS )))