Yes, I think these things are normal, that picture was obviously triggering for you so you tried to keep it 'out of sight, out of mind."
I used to do that in a sense when I Was trying to remain sober and get over using coke- I couldn't watch any movies or tv shows or movies on tv with scenes with drugs in it. . .
The same goes for pictures or scenes of people gorging themselves- triggers my bulimic tendencies that I do a good job of keeping buried about 80% of the time.