Hi. Bought a stout kit early in the week in hopes of getting it before the weekend. They didn't ship it fast and it sat all weekend in transit. I bought liquid yeast with a cold pack and was afraid it killed all my yeast. I brewed, and it looked like the yeast in bag inside of the sealed bag was busted, and had been sitting all weekend. I was afraid all my yeast was dead. I brewed on Sunday. Usually the next day there is a rolling boil. Yesterday...nothing. I just went out there....saw 1 bubble in the airlock...might be from me opening the door of the fermentor. What should I do? I ordered more yeast from Amazon (faster) will be here Thursday. Can I add more yeast?