The main duct is called the common bile duct. It is  common to the liver, gallbladder and farther down line, to the  pancreas as well. on the left side of your liver   It is on the right side of your body.
According to the article linked in the related links section below: A cold is contagious for at least a day before you come down with the symptoms. During that time you may be transmitting the cold virus to all of your buddies and co-workers even when you're feeling fine. Once you come down with the symptoms, a cold is contagious until the last of your symptoms go away.
No one likes getting sick with a cold. As soon as the symptoms start you probably start thinking about how long you are going to feel like this. But have you ever wondered how long you might be contagious with cold symptoms? Knowing when you are contagious with a cold is important to avoid spreading your germs to other peopleâespecially those who could develop serious complications from your illness.