Hi, My Name Is Edie, & I Have Colonoscopy Torm

Hi, my name is Edie, & I have colonoscopy torm when went to mix miralax with gaterade I realized it was expired by almost 2yrs, so I took 2 cups, dosages of milk of magnisa plus the 4dulcolax tabs, should this be ok, or do I definnetly need miralax, no transportation? Thank you, in jam.