Good day,
We understand that you are nervous, the PMP exam is challenging.
If you do happen to be unsuccessful at the PMP exam the first time, you can re-take it two more times within your one-year eligibility period. Fees are associated with re-examination.
Details for re-examination can be found in the credential handbook:
http://www.pmi.org/en/Certification/~/media/PDF/Certifications/pdc_pmphandbook.ashxBest Regards,
Helpdesk Team