You could get an FAA medical (they would issue one on the spot, and it's cheaper than here) look at
http://www.cami.jccbi.gov/ for a list of AMEs, and then fly on a 'student license' - there might be some additional paperwork but it wouldn't be too involved & you might have to do FAA air law (which isn't difficult - go to
www.webexams.com for practise questions)