I had a pretty severe case a few years ago and to my knowledge I had never had chickenpox. If I had the pox the case was so mild no one knew I had them. If getting the Vaccine will prevent you from getting them I would advise you to get it even if you have to pay out of pocket.

I had radical lymph node surgery, a heart attack, followed by stints, and shinges all over a week and a half period. Strange all three gave me unbelivable pain in my left shoulder so my doctors were really scratching their heads. Long unreal story.