Cholestatsis at 39 weeks?

Is it possible to go undetected for this long.?Around 32 weeks I had horrible itching episodes. I would wake up in the middle of the night and my whole body would itch. Everything felt like it was on fire but no rash. I delt with this for a few days and took Benadryl. The Benadryl somewhat helped but the symptoms were only at night and it went away so I never mentioned it to my midwife since it only lasted a few days.

Just tonight I went to bed itching my scalp really bad. I figured it was nothing unusual but then was woken up at 4 am with body itching everywhere. My shoulders,thighs,face,neck and scalp feel sooooo itchy! No rash anywhere and I took a shower and dried off. No relief. Is it worth a call to my midwife or is it probably just nothing?