I know what you are talking about, my desire level was not very much when I was young. I had my one and only son at age 18 and had a very hard pregnancy and delivery and for years and years after that I avoided sex all the time. I had desire but was scared to death of going through all that again, so I avoided it when I could. After I got "fixed" it became a different story.
However, even up until my late 30s once every other week would have been fine, but in my 40s something happened and I became a very horny lady. But even before that my current S had not much desire, and at that time he was having his own problems so even when my desire arose it was me almost begging him for it.
Right now once a month is what is normal for H but with his ED problems our SL is quite unsatisfying to say the least.
