Hey guys, I brewed my first batch 3 days ago and I havent ever seen any bubbles in the air lock. Normal? Need to take hydrometer reading? Not sure what to do, maybe I am just impatient lol. The beer is an english brown ale and has been at or around 72-74 degrees for the past 3 days. Also I didnt have a hydrometer during the brewing so I dont have an OG reading.