i am new to brewing. i have only brewed about 3 batches so far and have just used dry yeast but haven't re-hydrated it like i probably should have but it never seemed to bother it. well the last batch i just brewed a day or so ago i did rehydrate it like it said to do on the packet. well it has been a day or so and i still haven't seen any bubbles in the air lock yet when i would usually start seeing them by now. my question i guess would be did i mess up the yeast? and if i did can i just go get some more yeast and put in? or did i completely mess up the whole batch?