So last weekend I brewed my first batch with a buddy, a Rye Ale from a kit using the malt extract and hop pellets etc. He says that there have been no bubbles this week (it is currently in its 4th day). I have read a post here saying that amount of bubbling does not correlate to amount of fermentation happening but if there is no bubbling that is a problem right? Any suggestions on what went wrong? We are fermenting at a consistent 66 degrees.