1st time brewing beer. My instructions said to rehydrate the yeast. I followed the directions except it said to let it sit for 15 min. It was more like an hour before I was ready to pitch it. Both temps were ok. I pitched it last night around 7pm. It is 10 am and I am not seeing any bubbles coming off the air lock. Is it too soon or is the yeast not working? It is a Blond ale. Thanks in advance! Dom