Hi, I bought a tegu last week and since I had him he has pooped once. He hasn't in about four days now and I'm getting worried. He has eaten five or 6 dead pinkies, a few slices of banana, about twenty dusted crickets, and a very small piece of pizza sausage since I got him. He is about 20 inches long and as far as I can tell he is drinking water. He seems active and doesn't refuse feedings. Can anyone tell me what may be happening and what I should do?