Cholestasis (itching all over)

For the past three days when I get into bed to go to sleep my body suddenly out of no where starts to itch and feel like crawling sensations.. I googled it and it said I could be cholestasis...and said could be harmful to baby! Has anyone had this and it's more common in the 3rd trimester.. I made an appointment for Monday just wanted people's views on this thank you! 
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