I am new here and just wanted to say that I am 33 years old. I had 3 strokes by the age of 21,, mitral valve replacement. I just had my second mitral valve replacement last year and I chose to get a mechanical valve instead of a tissue. That being said, my INR does not stay consistent, it is up and down like crazy. Any advice? Also my face started going numb 3 weeks ago I went to the emergency room and they said it was not heart related but they do not know what it is. Could it be stress?