Good Morning and welcome to Just answer. I am Dr. Loretta, a licensed veterinarian and I am happy to answer your question.
Since your cow is running a temperature, this will usually indicate some type of infection. I would always worry about coccidia causing the diarrhea or other infectious agents. the most important thing for now is to keep her hydrated and give her a good antibiotic. If you have Baytril or Naxcell available, this would be better than LA200. We have not had good results with this antibiotic. Check to see what your farm supply has in stock and pump per up on this. You can also give aspirin to Lola at 0.25 mg per pound every 12 hrs to decrease pain and inflammation. Be sure to give her Pedialyte by dosing her with a dose syringe , 1-2 quarts every 4 hrs.
Until you know what you are fighting, this is all you can do. I would hesitate to give yogurt or other probiotics until we know the cause. Coccidia will respond to Albon which farm supply may carry and may be better as an antibiotic.
Sincerely, XXXXX XXXXX