I go for my ultra sound on Monday and I just can not wait to find out what I'm having. My mom told me about this crystal drano stuff that you put in a glass jar and then add your urine to and if the reaction produces a dark brown/black color it means your having a boy and if its a light color blue/green then its a girl. Has anyone ever heard of this or done this??? My mom did all the mixing of the things for me, and i watched it stayed light blue/green for like 20 seconds then turned black. She said that means its a girl...I want to get excited but I've never heard of this craziness before LOL!!