Can't attend interview???

<p>Hello all.
So my dilemma is that I scheduled an interview earlier this week, for TOMORROW.
Unfortunately I am unable to attend, and am scared that this will really hurt my chances of getting in.
Plus, when I scheduled, I was informed that tomorrow would be the only day the Harvard reps. are going to be in my area.
Help I'm freaking out!!
Should I just email the interviewer right now and let him know that I can't go?
I'm scared this will give them a negative impression of me.
Advice please??</p>

<p>It’s all right – stuff happens. If you have their phone number, call them. If not, then email them ASAP. If they will only be in your area tomorrow, suggest a telephone or skype interview at more convenient time.</p>