I totally understand where you coming from, sister. I, myself, had been in the same situation before. I would always doubt myself that I will pass the board exam considering that I was only an earner and I did not review at all. So, I had already prepared myself for anything bad that could happen way before I took the said exam. And I was in even more despair when I saw the questions in my specialization, which is TLE, since I really don't have any idea about carpentry, masonry, electronic and whatnot. But before I went ahead and start guessing the right answers, I took some time to pray to Him solemnly and did the same thing after. And then I flew to Manila right away from my province because I honestly had a strong feeling that I'm going to fail it and I know, if I did, I have to find a job there. On the other hand, while I was on my way to visit my half sister in her house, I got a call from my friend telling me that I passed the board exam and I was so very happy back then and got really excited to get off the bus to tell everyone about the good news. That was, for me, one of the happiest moment of my life since all my sacrifices paid off and I didn't have to retake or anything like that. And I guess that's the only thing that I could advice you to do, pray and have faith in Him. Remember what the bible says in Matthew 7:7-8?
7 Ask, and it shall be given you; seek, and ye shall find; knock, and it shall be opened unto you:
8 For every one that asketh receiveth; and he that seeketh findeth; and to him that knocketh it shall be opened.
And finally, if things don't turn out the way we wanted, I know God has a better plan for us. Nevertheless, I wish you the best luck in your future endeavors.