pregnancy terminology abbreviations?

Commonly used abbreviations
During the course of your pregnancy, you'll hear and read many unusual words, terms and abbreviations. Here's a quick guide to what they mean.
Amnio
Amniocentesis (testing amniotic fluid used to diagnose chromosomal abnormalities and fetal infections)
A/N
Antenatal (before birth)
ARM
Artificial rupture of membranes
BF
Breastfeeding
BMI
Body Mass Index
BM (BSL)
Blood sugar level
BO
Bowels open
BP
Blood pressure
Cervix
Neck of