Harry&Georges Mummy - Ive heard the same as Heidi about the boy/girl thing and I think certain foods can help (apparently) Hang on will have a google ... Right I found this have tripple checked on a few sites and seems to be saying same stuff...
"Foods to eat when you want a girl:Foods high in calcium like dairy products (milk, yoghurt, chees) and magnesium (beans, legumes, leaft green vegetables) as well as highly acidic foods like some fruits (plums, prunes and cranberries) as well as corn red meats, fish and whole grains).
Foods to avoid if you want a girl: Alcohol and caffine (coffee and chocolate) (lol guess ill be on boy watch again this is my staple diet!!) and foods high in potassium such as bananas, most vegetables, orange juice, Potatoes, spinach and watermelon."