I have been with my husband for 4 years. (Just about 5). I have no problems with our sex life but I have lost all "horniness". I think it stems from wanting to start conceiving and him not being interested. We discussed having children at this age before marraige. Now it's not talked about. I also have medical issues that will, along with aging, make it harder the longer we wait. I just don't know how to explain to him my fears for waiting or rationalize my loss of interest in sex. So, help? Any advice would be fantastic.