juicing cleanse while you are very pregnant? Is that ok?

I am new to this so bear with me please. I want to know if it is ok to do a liver juicing cleanse while you are pregnant. I have a recipe that is just apple and beets, and if its ok, how often can I do this. My cholesterol is very high (316) and I need to do something. I did The Master Cleanse last January for 12 days, but I am afraid that would be too harsh while pregnant, and I plan to breast feed for a year. Any suggestions appreciated. Thanks in advance.