BUSINESS ICT- I NEED INSIGHT

Hi,

I recently turned in all of my material for the business ICT and realized today that I made a very big stupid mistake. instead of writing that I was graduating in May 2019, I wrote I would be graduating in May 2015. I am so ashamed right now and feel so dumb for ruining my whole application with this dumb mistake. I worked on my application for a few months and made sure I had solid involvement on campus, solid essays, and a solid GPA (3.9). I was wondering am I ruined? Should I just start looking into different majors rn? Any and all insight would be much appreciated.

Thank you so much.