I brewed my first batch of all grain last week and when I put it away to ferment it was in a room with a 70F temp. It began bubbling like crazy a few hours later. I was told that was too warm so I put it in a room with a 59F temp. It stopped bubbling the next day and I let it sit for a couple more days. I felt the bucket and it felt ice cold. I measured the temp and it was barely above 50F. So I took it back up to the 70F room, shook it a bit, and it bubbled for a few more hours. Now it's not bubbling anymore. Is the fermentation already done or did I mess it up somehow?