If you went to a Dinosaur Junior concert and the doc said it was okay, there is no way headphones can do more damage than that!
A few years ago I was at a New Year's Eve part with a few famous DJ's pumping out the tunes. It was LOUD, it was in a HORRIBLE venue and the bass reflections off the walls was INSANE. Everyone was getting slammed with bass from all angles. One of my friends was about 4 months pregnant and she was a bit nervous about the vibrations and she herself was feeling a bit outta whack from all the sound slamming. She left early. She's nurse in obstetrics and wouldn't have gone to the concert at all without the knowledge of it being loud. The fact that it was like standing next to a 747 meant it was far louder than one would have expected and by the end of the night, they actually turned it down, but by then she had left.
tufflitestudios, once you feel comfortable after talking with your doc, (who will likely say it is fine, just don't blast away) then try for something that does lay flat, SR60's are really a nice inexpensive set to get the job done!