Congratulation for the feat of finishing the song in these conditions, and I presume without others noticing.
In complement to Faza's answer
If I interpret your photograph well, it means that you play with you right hand and your right thumb quite advanced over the rosette and the fretboard. Could be a good idea to train yourself to move your hand and arm a little toward your right and the bridge. It will help you avoid this unfortunate incident before having the instrument repaired and it is usually quite beneficial in term of power and articulation of sound when playing an acoustic guitar by uncovering the rosette and forcing a more deliberate action on the strings. There may be other little technique elements you could reconsider to make this kind of accident less likely (such as having the hand movements kept more parallel to the strings, retracting the thumb a little when striking with the full hand, ...)