Got a B in calc 2 help…

I took 3 summer classes. Discrete, programming, and calc 2. Got As except a B in calc 2. I’m now taking honors Linear algebra and differential equations (expected to get an A). I also had a B in college algebra dual enrollment junior year of hs. Should I retake calc 2 next semester and get an A? If I keep my As this fall I’m expected to have 3.8 gpa. If I retake calc 2 next semester it will be up to 3.9. Also which gpa matters. The gpa by March when applying or May when grades are final