My 2 year old silkie is sick with a few different symptoms. I noticed a few weeks ago she was wobbly. I brought her inside and fed her vitamins for a few days. On the second day she got worse having a hard time standing, but the very next day she was almost back to normal. I kept her inside a few more days and then put her back out in the coop. She was fine for a week, and then I noticed her unsteady again. I brought her back in and started vitamins again. Since then (about a week) she has gotten progressively worse. Now she can’t stand at all and falls over if not propped up. When checking her out, I found a grape sized tumor below her chest. I can’t tell if it’s a tumor or an infection. We don’t have any vets in the area that do chickens, so I’m solo trying to fix this. Any ideas as to what it is/suggestions?