It does sound as if it may be scoliosis, though have you noticed that your body appeared to be this way before? I was diagnosed with scoliosis two years ago when I noticed for a while that my body seemed to be visibly shifted and my hips/shoulders were very uneven.
I would definitely suggest making an appointment to see an orthopedic surgeon for xrays to make sure. Like the previous poster siad, if you haven't really been diagnosed with it until adulthood it's likely that it is very slight. But it's good to get it checked out just to make sure. That wasn't the case for me, but then again I'm only 17 and was diagnosed when I was 15 and still had some growth left.
Anyway, good luck with everything!!