Scarleteen

i ended my period three days ago (meaning the bleeding stopped) but i’ve been having brown discharge similar to blood the past three days. is this normal?

i’ll also add that my period started on the 12th and ended on the 15th.

Sometimes it will happen that a period ends with a few days of very light flow; it sounds like that's likely what you are experiencing here. Menstrual blood that's more brownish isn't unusual either.