You have started to decongest the biliary system and have a temporary and partial blockage of one of the bile ducts. Without sufficient bile stools are light in colour. The reason you vomited was because there was insufficient bile to neutralise the acidity of the Liver Flush potion. The duodenum will not allow acid to enter the intestines and consequently the only way to move the contents of the stomach is by being sick.
You need to find yourself an acceptable recipe. You could reduce the quantity of the potion or try another oil but don't give up because you may be on the verge of a major cleanse. Macadamia, hazel and almond oils are very good; so is high oleic safflower oil. (There are two types of safflower oil; high oleic and high linoleic)