I think you have hit on the beauty of beginning pvp in wow. You are not only learning your class and how to play it - you have to learn the proper reactions for what other classes are doing. It just takes time. Cool you came here for suggestions, don't mind the one dick head response you got, everyone else is more than happy to help. All I wanted to make clear is what you are going through is absolutely normal to progress in wow pvp. Its good you've focused down the exact class and when the issue seems to happen, people here will help you and so will time and practice.