Even though the duties of being a new mother can be overwhelming, your children will someday grow up and leave the home, but your husband will hopefully be with you forever. It's important to nurture your relationship with your spouse. Part of this is keeping your sex life healthy. Asking your husband to share child-care and other duties with you is one method of reducing stress. Heart disease can lead to fear of exertion.
Depression can make all activity, especially sex, difficult.
Medications, like some antidepressants and many blood pressure pills, can lead to lower sex drives. As with all medical conditions, your doctor can help you determine if your medical history or medications are causing problems with your sex life. Sometimes this is due to vaginal dryness or decreasing levels of estrogen and progesterone. Many women have a good response to small doses of hormones, called hormone replacement therapy. In addition, some women note increased libido when small amounts of testosterone are added.