3rd semester issues

Hey guys! I love this site and all the great advice. I'm a 3rd semester student in an ADN program and I graduate in May. I failed my first test ever 2 weeks ago. It has me scared to death. I thought by 3rd semester things would be a little bit easier. If nothing else, at least I know the routine right? Wrong. This semester has been crazy and I've been super overwhelmed.

I didn't slack on my studying. I did my usual routine. I expected a decent grade. I was shocked when I got my test back with a 78 (80 is the cutoff in my program). I'm just worrying that I might end up being one of those students that can't hack it at the end of the program. This is the time when we're supposed to be putting it all together, according to the instructors. What if I'm just one of those people that doesn't have the mental capabilities?

My next test is Tuesday. I have used every single type of study method that I know. I have been praying like crazy. I will study right on up until test day. I'm just wondering if anyone has had a similar situation and pulled through. Is this normal towards the end of the program? Any ideas on what I can do to make it 7 more months? I just don't want to fail. Thanks for reading and I appreciate any and all responses.