Has my wife lost her sex drive or is this natural?

Hi all I am 46 and my wife is 48, been married for 20 yrs, with two teenage sons. Last year we both concluded that my wife have the IUD removed and for me to have the snip. So we did. After that my desire for sex increased, probably psychological in that I was free to have as much sex as possible without any contraceptive which we did and were indulging about 3-4 times a week. However over the past few months we have been going through some turmoil in our marriage and I believe this has paid a toll on my wife's sex drive in that we now only indulge once a week, which on some of the occasions it's just sex. In that she doesn't want foreplay and for me to bring her to a climax. She is just doing it for me, however on other occasions it's great. When she doesn't wish me to help her to climax I feel rejected and can't understand why she doesn't want to participate fully During the period between our full sex activities she does give me oral sex if I ask Perhaps it's me in that I have an over active sex drive because I would love it every day of the week, or is it natural for a woman of that age, for her sex drive to lessen. Or thirdly am I just over reacting and that's how it is for most couples. Thanks in advance Chris

Put the internet to work for you. via Personal Recipe 2629979