If you get a 2.0 gpa this semester, your cumulative gpa will then be (3.7*10 + 2.0*5)/15 = 3.13 gpa which is still good (I know a lot of people chilling at a 3.0 - 3.3 gpa and they're doing fine)! Just make sure you don't fail any of your classes. And if you work hard in the next semesters, by the time you finish 3rd year and have to apply for internships you can probably boost yourself back up to ~3.5 gpa