Am I going to die?

On my way back home at the domestic flight between Pittsburgh and New York I honestly thought I was going to die (till I remembered I'm not supposed to die yet). We went through some really bad airpockets and at one point we were all lifted up from our seats and it felt exactly as if you rode "freefall" at an amusement park. Everyone started screaming and one of the flight attendants hit her head and fainted. Before the occurrency we had just had our refreshments; which made all the cups fly up into the ceiling. Yah, I do not want to experience that again!