The primary medical examiner in a triple-homicide said she didn’t prepare testimony in the case because medical problems interfered with her right state of mind in a trial before DC Superior Court Judge Neal Kravitz on June 3. Jalonte Thompkins, 34, is charged with three counts of first-degree murder while armed, three counts of possession of a firearm during a crime of violence, and unlawful possession of a firearm with a prior conviction grea…