I'm sorry to hear that. but without sounding heartless you have 2 choices now. Being gutted or forget being gutted and move on, spilt milk and all that.
I have a friend who recently failed his IR first attempt. Went on to complete the first series pass. He was gutted by the fail but several hours later decided it wouldnt do him any good. he said.
1. fully debrief yourself on what went wrong and what may you could have done different - every step (not today though, head is in the clouds)
2. Address those points if possible
3. Decided if series 2 is financially a better option that series 1 given any mandatory training required.
4. look forward not back, you will get it.
Best of luck