I just wanted to add, that generally 'society' seems to add to the whole preference issue.
What I mean is, as a mother to two DS,now pregnant with my third I often hear, "ohh bet you want a girl this time"!
And even if you say you have no preference, you are pushed to to agree!
When I say, nope, no preference, just a healthy baby thanks, you can almost see the tumble weed roll past!
Each child is a special and individual addition to a family, bringing their own personality and I get excited thinking about meeting this little person and them joining our family and watching my sons welcome them.
If it is a girl, great, I will get to experience the other side of the coin, and if its another boy I will be treated like a queen when my boys are older!!!
Thats just my opinion and I dont want to discount anyone's feelings,and its obviously a very emotive issue.
But I feel that the OP has come for support to make sense of her feelings, (that she did say she was ashamed of) and has maybe voiced what it appears others have agreed with albeit using different terminology.
Whilst I hold different views, I am sad that there seems to be a feeling that the OP is ungrateful or any less thankful for a healthy child than the rest of us.
I dont imagine for one second she wanted to offend those who have suffered losses and those who have suffered difficulty.
This, for her could cause difficulties after the birth of her son in bonding, and for me it appears that she is trying to deal with her issues before then to avoid that. By being honest and trying to seek the advice of others whether we agree or not, can only be a positive thing.