I know what you are going through. I too have three girls and almost gave up hope of ever having a boy. With all three girls I didn't feel like I was having girls nor boys....I was hoping for a boy. I always wanted a boy but thought I just wasn't meant for one. After my last DD, my DH and I just said that was it, that our family was complete, but in the back of my head I wasn't scared to go for #4....well unexpectly without any planing or swaying I found out I was pregnant and recently found out that it is a BOY!!!. You never know maybe the fourth time around for you will be your chance to finally get your son you so want. I never thought I would have a boy.....I actually am still in shock to have a boy, but all I can say that it is possible and I hope you hear BOY one day. Good luck and keep us posted!!!!