P.S. In the meantime, try a low fat diet. It may be of help.
Linda, you may want to consider looking into the following: http://hopkins-gi.nts.jhu.edu/pages/latin/templates/index.cfm?pg=disease1&organ=3&disease=12&lang_id=1
Any form of pain - when it's severe and unexpected - can have an impact on your BP. You'll start to put out stress hormones and the BP will start to elevate, unfortunately.
For some, enlargement of the CBD seems to simply 'happen' after removal of the GB. For others, however, it can be due to problems that result after the surgery such as the formation (or retention) of stones and blockage of the CBD. It can also be the result of spasms of the sphincter of Oddi (the muscular opening from the CBD to the duodenum) that can cause a backup of bile and pancreatic fluids.
Go back to your GI person and discuss the situation.