My ten week old pullet is gasping for air and has a bad rattle in her chest/nose( I can't tell where it is coming from). She doesn't has no discharge from her eyes or nose. I gave her a dose of teremyacin tonight. She has gotten worse over the course of the day. Is this all I can do for ehr or is there anything else I can do? She is VERY small, hasn't grown since we got her. She was approx. 6 weeks old on Aug. 1st, 2008. She only weighs about 4 oz. I am very worried about her!!