Wait at least 3 weeks before trying your beer and if there is no yeast cake on the bottom of your sample bottle then try rotating/flipping the bottle over several times and place in a warner place around 68-70 F for 1-2 weeks. I did this for a few batchs that did not carb very well and this fixed the problem within a month. This is not my solution but a method given to me by supporters on this forum.
North Liberty, Iowa
"Beer will change the world. I don't know how, but it will."