Well if you have an idea of what it might be, I read somewhere something like up to 71% of mothers were correct.. I knew from the get go she was going to be a she, and well, she was! But I didnt have hardly any symptoms myself with her, so I worried/thought the same thing. I carried really high as well- I heard that is a girl thing as well...
Check out a chinese gender prediction thing such as -
http://www.immihelp.com/nri/chinese-...rediction.html
Though you are suppose to add 9 lunar months to the age at which you got pregnant.. Such as I was 27 when I got pregnant with Alex, but adding in 9 months it really made me 28, and I got pregnant in November.. So it came out true for me!