To be honest, when I first started reading your post - I was getting a bit peed-off to say the least (4 m/c & ttc # 2 for 16 months), but then I read further about you being told it was a girl, selling all your boy items etc... and I feel really quite sad & somewhat disappointed for you. I think Trillian's suggestion to go to the Gender Dis thread would be a good idea. I hope you can find some peace.
Me too - and then I remembered how I felt when they told me that baby #6 was a boy, after five girls, and how I nearly fell off the ultrasound table. Gender disappointment had always been one of my big OHNOYOUDIDN'T! issues, but now I know what I'd have felt like if later on they'd said they'd made a mistake and it was another girl. I know I'd have got over it and loved the baby just the same, but yeah, you've got this picture in your mind of the baby you were having, you had hopes and dreams attached to that, and you have to let those go now, and there will be hurt involved in that.

I hope that the hurt isn't too bad, and that you are able to enjoy the rest of your pregnancy. I hope you get some time to buy some special little things for your wee little boy.