I brewed my first batch of an Amber Ale last Saturday. I added it to my glass carboy and then added the yeast. Next 48 hours had a lot of action. Enough that it foamed over the airlock and I had to put on a overflow tube into some water. Bubbling has slowed significantly and there might only be a bubble every 5-10 minutes. There is no more foam at the top and kinda looks like flat soda. Is something wrong?