I don't think you need a vet for the little " sighs" she is giving unless they persist and seem present tomorrow and more pronounced, or breathing is more labored. She's already on an antibiotic, so maybe just see what your vet says. As far as whether or not she has mouth rot, if she does, it may be just the beginning, and according to what I've read, the prognosis for recovery is really good...you can try applying dilute betadine or Nolvasan twice daily, and make sure her temps. are good in her tank. I agree with the others that said to discontinue the hot pack at night. It may even create too much humidity, and even too much heat without humidity is bad for beardies at night as they need a lower temp. in order for the body to rest at night.