My husband and I have not had sex for more than 4 months. I don't know why but I just don't feel sexually attracted to him anymore. What should I do?

I suggest a short trip just between you and your husband will bring the spark back. Sometimes due to the hectic life and we tend to feel very stressed and tired to intimate with our closed one. If this doesn't work, then you have to have a heart-to-heart talk with husband instead of avoiding it.