The camera could be damaged. But if not, it is probably something you have done in handling the film.
The back of the camera should remain closed unless you loading film or removing a rewound film cassette.
Here is a link to your camera's user manual. Pay attention to the parts on loading the film, and then rewinding and unloading the film (pages:19-23). In particular, take note of the following warnings.
When loading:
Film should be handled and loaded in subdued light [or] at least shaded from direct sunlight by your body.
When rewinding and unloading:
Never open the camera back when there is any red still visible in the Safe Load Signal.
In practice, I think, this last warning is where you might have made a mistake. You must rewind the film back into the cassette with the back of the camera still closed. The rewind crank gets harder to turn as you pull the last of the leader off the take-up spool, then becomes much easier to turn as it pulls the last of the film back into the cassette. Take a few more turns for insurance. Only then, should you open the back of the camera. When you open the back, any of the film that is still out of the cassette, will be exposed to the light and any pictures on that part will be lost.
Film can be a rewarding medium to work with. In my view it teaches you to think about what you are doing - the composition, the lighting, the colours, the focus, the exposure; and you don't get to see any results until you have shot and developed the entire roll.
