Well...I'm a Freshman and I got a B+ in Calculus I...I hadn't planned on taking Calculus II, but now considering I got tis B+ should I take Calculus II in order to kinda make up for it?
Its a B+ for goodness sakes! It's not like you failed the course, or even got a C in it! I doubt any school you apply for in the future will even look twice at the fact that you made a B+ in CalcI as a freshman - forget about it and move on, taking CalcII just isn't worth it!