well its taken hours but i have read every single post.
i'm so sorry for what is happening to you TLP.
i too believe that whether your husband thinks he is raping you are not is irrelevant. he knows you dont like it or want it, so at the very least he knows that he is disrespecting your wishes, ignoring your feelings and prioritising his sexual needs/fantasises over everything.
i havent had this happen to me, but i have been in the position of feeling like i will ruin everyone's life. (my ex was violent) im not sure if its because of low self worth or because we feel we are stronger and can cope with the horribleness better than others or whether we just cant cope with the guilt cos we think it will be our fault. but its not is it?
i cant (and wasnt) blamed for leaving someone who would take run ups to kick me, or smash plates over my head. it was all his doing.
this is all your dh's doing.
i dont want to put you in more turmoil, but these lives you think you are saving are at the detriment of your own and also probably your dc's. are they really more worthy?
is it not possible for your parents to find alternative accomodation? perhaps even a heads up first to the fact that you are having problems? would they even have to go? you are married so entitled to half of everything (???) Could you say that he can keep the house you are in now,. if he lets your parents stay?
as for his mum, could you just say you are separated and emit the truth if she is close to dying? could you even get away with not telling her for a bit?
sorry if this is not anything you feel you can do. im just trying to throw out some ideas to help you.
i know and remember too well how awful it is to feel like the person you should trust the most is the one that hurts you and the place you should feel safest (your home ) is a place of anxiety.
i really hope you find a solution for you.