I have 2 bred heifers w/ a cough and yellow and white snotty noses. The nasal discharge is only in the morning. Temps are good and they are eating good. Our weather in Ohio has been rain almost everyday for 2 weeks and in the 70's one day 30's the next day. any suggestions? This is the 3rd day, hardly any coughing. knock on wood!!! Hate to treat them, if not needed, since they are bred. Thank you