I could have written your post!
I found out at 16 weeks I'm having a girl. good clear shot.
18 weeks it was confirmed - another clear shot.
then at 21 weeks I started disbelieving it... thinking what if the tech was wrong? so got another scan... another clear pic.
then at 24 weeks I started having dreams I had a boy.. so I went to another gender scan - where they confirmed girl again.
28 weeks I had my 4d scan done and they confirmed girl once again....
Talk about obsessive!!!!!
Your picture definatley looks like a girl!! congratulations! and i hope you find something that helps you believe it and not get obsessive like me!