I'm fixing to give a dose of penicillin to a hen who has a swollen lump between her leg or under her rectum. Its not a prolapse or egg bound. I called a Vet and he told me to try penicillin, he didn't see the hen. I bought it at a local feed store and the feed store guy told me to give 1/2 cc everyday(shot). Now, I don't know if this is ok, that is the dosage. Any advise I would appreciate.