I did the same thing and it told me boy with Dominic and all the rest of the times it said girl,and i used those Chinese charts too for it and they all said boy as well...
I was totally shocked when they said he was a boy when they did the u/s though,and even when he was born they gave me a look at his parts for me to be sure that he ws a boy....
I would have been just as happy with another girl but it was nice to have a boy though...
There is nothing compared to the shock when they tell you it is the opposite sex after so many of the others!