Hello, thank you for posting. And I apologize for not being here sooner but I was having computer issues.
It's very hard to diagnose a woman's sudden lack of interest in sex because it can be rooted in many causes. I actually wrote an ebook about it but haven't marketed it or uploaded it yet. But to be quick and brief, you need to reflect a little:
1. Is this a sudden change?
2. How is her general health? Physical and emotional health?
3. What is going on in her professional or personal life? Family problems?
4. Is she overwhelmed or exhausted? Sleep problems?
5. Do you both communicate well or could she be harboring some unresolved feelings about or toward you? Anger, resentment, worry, disappointment, frustration, boredom?
6. Does she have body image issues? Has her weight gone up or down?
7. Consider other areas of your marriage. Is sex the only problem area?
My first step would be to ensure her physical and emotional health. A woman will not feel sexual if she is unwell. Fatigue or depression are huge libido killers.
Second, check your intimacy connection. If sex is the only time you give her attention, she'll feel used.
Third, the other women are right about sharing her load and taking her away. I for one cannot go from "mommy mode" to lover very quickly. I need a mind break whether from movies, music, a night out or just some time alone with each other that isn't sexual. Remind me that I'm special to you and not because you want sex.
With that said, many husbands and wives have discovered other reasons for the change in sex habits. Some of them shake up the marriage. Sometimes, a bad childhood memories of abuse will surface at odd times in life. Same-sex attraction issues. But don't worry. The three most common include 1. Changing hormone levels 2. Fatigue and depression and 3. Unresolved feelings towards the spouse.
Don't push the sex. The sex is only the surface symptom. Talk with her to be sure she's happy and satisfied with other areas of her life. A man can compartmentalize his life and have sex no matter what is going on. Sex can be an outlet for stress. But a woman can't separate all the areas of her life. If she is upset in one area, she won't feel sexual at all.
Tell us more and we can try to help more.
Being a caring mate is a turn-on, by the way.