My first time brewing, with all new everything, after a week and a half in the bottles, the bee r tastes sour. It's an amber ale extract kit, with dry yeast. It spent a week in primary, a week in secondary, then to bottles. I used the one step solution that came with the kit for the primary, then star san for everything else. I saw no visual signs of anything funny, and when I bottled it the taste was good, but flat. Now after a week and a half I have an overpowering sour taste. Bottles have been sitting in my basement around 64 degrees.Do I just need more time, or is the beer infected?