Did you have a lot of AP units? Or take any summer winter classes?
Anyway, the 3.7 average is across all transfers admitted, so it isn’t necessarily by major. If you’ve completed all of the pre-reqs/major prep and most of the GEs, you have a very good chance of being admitted. However, if you’re taking a lot of important courses this semester (as might be the case since this is your first year), you will likely get an SGR first and then if you maintain good grades (mostly A’s and B’s), then you have a great chance at being admitted.
You might also want to check out the USC transfer thread
http://talk.collegeconfidential.com/transfer-students/1903737-2017-2018-usc-transfer.html#latest