Hey,
I just realised that I didn't use an HB or B lead for my multiple choice question papers in my IGCSE Exams in Chemistry and Physics.  
 
  
  
  
 
The day before the exam I bought a new mechanical pencil because I had lost mine, and through the year I've always used HB lead so that during my IG's the only lead I'd have access to would be HB so that such a problem does not occur - but what to do, in spite of all that, it happened and I simply feel terrible at the moment! 
Does this mean that my paper would not be corrected since I heard that it's corrected by passing it through an OMR/OCR ? 
Please respond ASAP! 
I don't want to lose out on my A*s because of this.  

Thanks in advance.