Back with a vengeance!

Back with a vengeance! Does anyone else go through periods when everything is going great Stammer-wise then all of a sudden, BANG! You get asked something, that person you always Stammer when talking to calls, or you just feel under a certain type of pressure then the Stammer just comes rushing back. All of a sudden for the next few days you're even struggling to say your name. (mine begins with A and has always been a nightmare to get out)