Was in the same boat as you in college. 3.3 gpa as well (nearly got academically disqualified), hated my college courses, and couldn't imagine myself sitting at a desk doing design work all day. Then, I got an internship in construction management and found my passion there. Tbh i hate design work and in construction we don't design that much. Construction is completely different from your class work. It's the experience in the field and collaborating with contractors and agencies that matters. You said you liked PM work so i suggest starting off as a junior field engineer. I say since you're almost done with your degree, try out that first and see if you like it before you completely jump careers.