Days I Feel Like I Should Remember but I Don't at All

i have a really really good memory for all mundane things. but anything that should probably be important to me i just can't remember.
  1. the day i got my period
    i don't even remember how old i was
  2. the day my dad got diagnosed with leukemia
    i know this happened in middle school but other than that i'm at a loss. i think i vaguely remember the conversation maybe?
  3. the day my aunt died
  4. the day my cousin died
  5. first day of high school
    no idea
  6. first day of college
    this was only like a year ago and i do NOT REMEMBER
  7. what else has my mind blocked out?