In this case it's probably not an issue, but be aware that credits are not all you need for graduation. You can have 200 credits, and you still won't graduate until you fulfill the requirements of at least one major.
Also, for those who need to change schools for one reason or another, be aware that most colleges put a cap on the number of transfer credits they'll accept, *and* require you to earn some minimum number of credits at their school
before they'll graduate you.
None of which diminishes the accomplishment in the OP, of course!