So my wheat beer has been in primary for about 13 days and I finally got around to racking to secondary. When I took a reading it was at 1.014 so I figured it was finished or very close to finishing. I just thought I’d take it off the yeast and give it a week or so to clear up a bit before bottling. Well now it’s been in the secondary for two days and has really started to bubble again. In fact the foam has come up through the airlock three times now!! What could cause that? I’m taking another reading tonight to see how much more it’s been working but I’m afraid that something (bacteria?) got in there and contaminated it to make it ferment again. What do you think? Is that possible? Am I looking at a ruined batch?