Sorry, I didn't see your message until about an hour ago, I had a water pipe burst in my house, flooding into the foundation, lovely...
As Cooper said, she's probably dehydrated from the antibiotics, which can cause some constipation...I think you bought her some unflavored Pedialyte? Like I said, you can drip that on her snout, or mix it with some of the baby food and with a little raw, canned pumpkin, and drip that mix on her snout, and then the next day after feeding her that give her a warm
bath, the pumpkin should work as a laxative. A week without pooping isn't too bad, if it gets to two weeks then you worry...
As far as the mouth gaping, is it only when on her basking spot? If so, I would take the basking spot temperature again and see what it is, it may be that it's a bit hot for her, it's always good to remeasure the temps inside her tank periodically, as they change with outside temps too...But I'm sure that the Baytril and the Panacur are making her not feel very well....She finished her Baytril, right? Did you give her some of the Soy Yogurt or other food before giving her the Panacur? Panacur works, but it's rough on them, her feeling badly is completely normal while taking it. Putting the Soy Yogurt in her belly before giving her the Panacur can help. Keep me posted, I'll be sure to check in on my messages...