I have an older nanny goat that has been sluggish for the past couple of days. She will eat, but only if you put the food right in front of her mouth and she isnt eating as much as she was. she will get up, but she isnt nearly as mobile as she used to be. also she has swelling on the top of her neck. We worm our goats regularly, but we thought maybe she got them somehow so we put some liquid ivermectin on her and gave her a dose of past wormer. That was about 18 hrs ago. no change as of yet. she also has white gums. What is wrong with her.