I I Am Experiencing Flashbacks, Stomach Uneasiness And Some Mild

I I am experiencing flashbacks, stomach uneasiness and some mild cold sweats. These same feelings preceeded a fainting spell Five years ago when my heart rate dropped dramatically. I had a pacemaker installed. Have not had these symptoms since. I was driving my car at the time five years ago when I passed out. The flashbacks are somewhat like hallucinations.