I want another baby.....has anyone else felt this way...am I "normal"?

5 years ago my husband had a vasectomy...well ..i desperately want to have another. I want it so bad that at night I cry myself to sleep. My husband doesnt even want to hear the word...never mind emagine having another...I feel like Im a bad person because I want this sooo bad. I know I cant get pregnant with my husband now, and I know that it was a decision we both made and I have to live with this choice...but I feel so so sad, knowing that I will never experience it ever again....I have felt like for a long time,and feel like something is missing in my life. I dont talk abut it around my husband because I know his feelings. My husband and I are best friends and I love him more then life itself...but I wish he would understand what Im going through.... Does anyone know how I feel...am I alone?....Will these feeling ever go away?