Sorry I'm pretty new to this, but please bear with me. Is it possible that my beer could ferment completely in 4 days. On the 20th I made my 5 gallon batch, then on the 22nd the airlock started bubbling, on the 23 it stopped and has not produced any bubbles since then. I did some readings and its reading 1.002 and had a starting grav. of 1.047 How did this happen so fast and what should I do next??? Should I let it sit longer or should I go ahead and keg it? I'm just shocked at a 3-4 day fermentation and something seems too good to be true.