Decreased NBME Score

I got a 75 on my first NBME a month ago and just got a 67. Feeling very disappointed because I was hoping to score over 70 again. I was super distracted and not locked in this whole test, which may have contributed. I was planning on taking it soon, but now I’m having second thoughts. Any advice? If it helps, I’m usually a good test taker and don’t freak out day-of.