I bottled my first brew 9 days ago. I used 3/4 cup corn sugar in 16oz flippy bottles. I tried one today just to see how things are progressing and there was no "pop" when I opened it and not ONE bubble.. NO carbonation at all.. shouldn't I get somthing after 9 days?? I have the bottles in a dark closet around 70 degrees... what could be wrong or is it too early? I've heard people on this site say they have decent carbonation after a week.. how?