I edited this question for posting purposes, but it also included a bit of information about a graphic sexual picture sent by a partner. What I suspect has happened is guilt.

The female orgasm generally requires mental stimulation as well as physical stimulation, and the fact that you’ve lost sensation in your clitoris coinciding with this picture suggests that you feel wrong about using that picture as pleasure. So my first and only suggestion today is…don’t feel bad! As long as the picture was consensual (although I previously posted on sending underage nude photos) there is nothing wrong with imagining body parts for pleasure. Work on trying to get over feeling bad about the picture and see if you can feel in your clitoris again.