Unexplained fever in a dog.

Hi Dr. Marie,

My pit bull Indy has always been in pretty good health but has recently developed some sort of infection. About 3 wks ago I took her to the vet because she was running a fever of 104.3 and cried in pain when I touched her right side shoulder area (at the top near the spine and ribs). The
Vet did xrays and blood tests, nothing on xrays but showed high white blood cell count. He said it was not a result of parasites. Gave her cephalaxin for 1 week and rimaldin for pain. We had taken a fall together a few days prior when our hammock broke. I thought that explained the pain but obviously not the fever. She seemed to get better, was eating drinking and playing normally. Then approx a week and a half ago, I noticed she was listless and had been off her food. Took her temp and again it was up to 104. I gave her a 500mg dose of cephalaxin that night and took her back to the vet in the morning. Throughout the night I stayed up with her, making sure she drank water and kept ice packs on her to reduce the fever. The vet said to continue antibiotics for one more week, 500mg cephlaxin once per day. I took her back for the follow up, she has been lethargic and refuses water unless I hand feed it to her. She hasn't had a normal bowelmovement in several days. The last time was three days ago, and was soft and thin. Before that it was thin but hard. Her temp has been fluxuating between 101 and 104 all week regardless of medicine. The vet said to stop the antibiotics and start a probiotic Proviable-DC, twice a day with food. We started that two days ago. She has refused her normal dog food for two weeks, so I have been cooking for her. Chicken and beef in broth with green beans, crushed flax seed, with some rice. Today I gave plain oatmeal instead of rice. She is very excited about food since I stopped the commercial dog food. Her temp has continued to flux and she is still lethargic. She will play when I get her toy out but doesnt want to willingly go outside. She was drinking on her own today but is still running warm between 102-103.5. I did notice discharge from eyes and nose, watery mostly but with a dry rough nose. There have also been a couple times when she walked by me, I reached down to rub her on the back of her neck/shoulders and she cried out. However when I massage her and check her for sore spots she doesn't react. She doesn't seem to be tender in the abdomen at all but seems to be tender in her anus...I think probably because she has been getting her temp taken so often. I am at a complete loss as to what is wrong with her, no poisons or anything like that.. Although it is possible she ingested some temperpedic foam (she sometimes chews her bed) but nothing showed up at all on xrays. She hasn't been out of my sight at all for the last week, she is always with me or my husband. The vet said that if she doesnt get better in the next few weeks that we will run more diagnostics. I want her better now! Is there anything I can do or do you have any idea what may cause this? My vet sure has no clue. :( Please help.