The photo's not showing up. Did you receive medical attention at the time? I'd hope pictures were taken (just in case there's a need in future to refer back to those). I'd also hope that you took out a restraining order against your ex-boyfriend for your own protection.
A year later you're seeing a hump and it's sore to the touch, so yes, I think it may have been broken and healed poorly. A doctor or plastic surgeon could advise you much better.
History tends to repeat itself -- have you figured out how to avoid being hurt by potentially abusive boyfriends?