bile acid lab work

Nesdely • My family is everything. Mother of three blessing and god just bless us with baby number four as our New Years 💑👪👩‍👦
Okay so my chronic acid came back high 
Anyone know what this means 
Waiting on the doctor to call me back 
I took labs at 35 weeks now being almost 37 weeks they sent me a message about maybe re testing cause of the serve itchiness 
And why re test if I won't get the lab work back til I am 39 weeks or might already have the baby 
Anyone know what that means?