The pic does not show up. How is your beardie acting now ? Some beardies don't seem to tolerate cucumbers so keep those out of her salad and be sure that any food items are smaller than the space between his eyes. You can offer water dripped on his snout to hydrate him in case he did actually vomit.
Sorry to hear that....how long have you had him ? What else did he eat besides the cukes ? What size is your beardie, and can you list his exact type + brand of lights ? Do you know the temps. in the tank [ this is all important info ] Does he have loose substrate like sand ?