I'm new to home brewing but have had good luck with my first 2 attempts, a Summer Wheat and an Oktoberfest. Last Saturday 10/1 I brewed a Bavarian Hefeweizen (True Brew extract Kit). I substituted a liquid Hefeweizen Ale Yeast rather than use the dry packet that came with the kit. Fermentation started Sunday 10/2 and got so intense that my bucket bulged and I had some spillage out of the airlock but no blowout. Now 6 days later I still have bubbling taking place. The kit said fermentation should stop in 48-72 hours. Should I be concerned? Sorry for the long question! Thanks for any help!!