My dove is vomiting a lot. I honestly don't know what's wrong with her. She's also extremely puffy, having a hard time balancing, falling asleep a lot, and she's refusing to eat or drink. I clean her water every day and I haven't changed her diet. She just got sick, and I'm afraid to lose her, since she is such a big part of my life. Please, can someone tell me what's wrong with her?