My son has a 3-4 month old beardie. He's not very big and has never been a huge eater. Yesterday morning we noticed him not acting like himself. Keeping his eyes closed and real still and not moving. I got him out to check on him and he had a runny watery pop while outside his cage. He was ok during the day just real leathargic, eyes closed a lot. However this morning when we woke up he hadn't moved from his basking rock during the night like he usual does and he was laying on it limp and was really cold. It got cold here during the night and our house heater was not on so we assumed he got too cold through out the night but we decided to take him to the vet anyway. Just to be safe because my 9yo would be devastated if something happened to him. He was still not moving much this morning or eating. However, On the way to the vet he perked up and was acted like his normal self. The vet said overall he looked great, little on the small side and that he had a bacteria infection. She gave him an antibiotic. Car ride home he was great, alert and active and now in his cage 7 hours later he won't move, open his eyes, he looks frail and dead. At first I thought he was dead except I picked him up and he moved his legs once. Can an antibiotic make him this way, is he dying? I don't know what to do?