5 depends on your insurance plan. If you're from the area (Indiana and probably surrounding states) your insurance plan may cover you - CALL AND CHECK :) If you're from New Jersey... a lot bigger leap of faith. Also check http://healthcenter.indiana.edu/about/fees-payments.shtml for official details.
In general, it depends on how good an insurance plan you have. Back in the dark ages insurance companies would either cover you outright or you had to have setup like a ‘guest’ so you could see doctors in your college town (any doctors, not just the IU health center). But these days are gone, and things aren’t quite as straightforward. If you have POS (point of service) or HMO type plan, you’ll need to check to see who is in-network in Bloomington, or if they’ll cover visits to the health center.