関連ワード:  keep coughing up white mucus    keep spitting up white mucus    keep coughing up white frothy mucus    keep coughing up thick white mucus    dog keeps coughing up white mucus    dog keeps coughing up white phlegm    why do i keep coughing up white mucus    why does my dog keep coughing up white mucus    why do i keep coughing up thick white mucus    why do i keep coughing up clear white mucus