supreme commander

I have to repeat medsurg since i failed by 1.5 points. I failed the theory portion. Over the past few months I wanted to be proactive about my failure and not just sit and cry at home. I decided to go for my CNA. I did about 250 practice questions online, passed it on my 1st try. With my CNA, I obtained employment in the Hospital as a PCT. There I am learning valuable skills that I haven't been taught in nursing school like drawing blood, taking accuchecks, doing 12-lead ekg's, time management with 10+ patients, etc...I am also reviewing the material and doing nclex type questions. However I heard the chances of succeeding the 2nd time around aren't that great from what i've read on these forums. Even tho i'm putting so much time into it, i feel its not going to be enough. I have the same crappy prof. teaching the class and i'm worried she'll look for a reason to fail me again. I dont like her teaching style and i feel some of her exams are unfair. I only have 1 more shot at this or i'm out of the program. I'm also a 2nd degree student and can't afford to fail since i have loans and no career type job to pay off those loans.