Don’t worry, 90% of everyone who does seminary wonders at the end of their first (week/semester/year) whether they understood their calling right.  I had a lot of fun flipping through my old notes (7 years since I took Early Church History!) to pull out the most annoying terms you hear your first year at seminary.  You’ll never need to use them again unless you are a professor.  But that doesn’t mean you don’t need to learn them, so suck it up!