I know you are in a very stressful situation. It might be effecting your sex life more than you realize as well. Last year, when things were improving between my husband and I, I found myself feeling more tenderly toward him during sex and it was so much better. We had been having OK sex for years (on a few ocassions I felt pressured) and the falling out of love was so gradual that I did not remember how the good kind of sex felt. Unlike at the beginning of our marriage, the sex was OK but yet it really wasn't. I remember you saying in another post that sometimes you have had sex with him because you felt sort of pressured. That's not quality sex and when you do that you can end up feeling sort of revolted by it all....
Of course, it is always good to stay away from movies and websites that aren't positive.....<<hugs>>
PS--It can be awkward to talk about these things to a therapist the first time but after that, it will seem quite normal; I recommend it.