You were ill advised on what you need. The diet of veggies is all wrong I will go over the diet with you. We never feed meal worms or super worms to Dragons, due to the fact the are high in chitin the hard outer shell. hard to digest and high in fat that over time causes liver disease. The Light you have are not UVB lights You should have a Reptisun 10.0 linear tube. The UVB bulb supplies UVB rays to work with calcium to prevent Metabolic Bone Disease. The Night bulb is not needed unless temps drop below 70's. The basking bulb is for heat and light.
The temps are another issue. You need to have a good digital thermometer or temp gun. If the temps are too cool, then the dragon cannot digest food and will not be able to pass stool. The temps in basking area should be 105-110, the warm side 90's and the cool side should be 80's. This is extremely important.
Now for diet. We feed collard greens, mustard greens, dandelion greens and flowers, Butternut squash, escarole and curly endives. The pepper is fine, but snap peas are sugar, carrots can actually cause vision issues and cucumbers, are only water and seeds can lodge in the intestinal tract.
You need to update the veggie diet. The pry should be crickets, dubia roaches , silk worms, phoenix worms and as a treat goliath worms.
The bedding needs to be disposed of immediately.We never use loose substrates, they are deadly. Use paper, ceramic tile, or cage carpet.
No what we need to do to try and help the dragon is feed a little Plain baby food prunes, since they are the right consistency so as not to be aspirated into the lungs. Once you have fed the prunes, please wait an hour and then place in a warm soak at about 90*F. When in the soak gently massage the abdomen from snout to vent. do this for 10 mins. This should promote a stool. You can repeat this daily.
You need to properly update husbandry. A Herp Vet visit should not be that much. If this is a blackage due to parasites, then all we do will not help and may need a Herp Vet visit. I cna locate some with a State.
Diet sheet color coded: http://www.beautifuldragons.com/Nutrition.html