>>1
Go there.

I was always good at (understanding, writing) English, but I could barely speak it at all. After spending three weeks in an English-speaking country, using the language for work and daily life, something just clicked, and now I don't have any problems at all.

Of course, that was after a lot more than just three semesters. But if you're in college you only have so much time. If you get the opportunity to go there as an exchange student, do it.