There are other ways your doctor can look for the cause of your enlarged liver. He may use an ERCP, a scope that checks for problems in the ducts (tubes) that carry bile. An MRCP, a special type of MRI, also helps spot that kind of trouble.
Cholestasis of pregnancy, also known as obstetric cholestasis or intrahepatic cholestasis of pregnancy, usually occurs during the last trimester of pregnancy, and triggers severe itching, especially on the hands and feet. On rare occasions symptoms may appear before the third trimester.
1 Definition: Cholestasis is the term used when the flow of bile from the gall bladder into the small intestine is slowed or blocked.  Cause: The liver related causes can be infections, pregnancy, alcoholic liver disease, cancers, and primary biliary cirrhosis.