I am a 18 year old housewife, married three years, and somewhat want to desire more. Advice appreciated.?

Sounds like you are bored and have nothing to do in your life while your husband is at work.Except the duties you are doing as a good wife.You are very lucky to have a good relationship so hold on to that.But you need something else in your life to fill the feelings that you are having.Perhaps having a friend to spend time with will help the blues.Sounds like you are a great wife ,as not many will do the things you are doing and they are a lot older than you.I hope you find an answer that will help you get through this and then your life will be complete.Good luck!