Wow, acronyms much?  There’s a lot of initials spewing out on internet these days.  Here’s my best stab at a comprehensive list, mostly dealing with infertility:
2ww – two week wait (between ovulation and period)
AF – aunt flo (period)
BBT – basal body temperature
B/W – blood work
BFN – big fat negative
BFP – big fat positive
CD – cycle day
CB girls – cycle buddy message board
DH – dearest husband
ENDO – endometriosis
ET – embryo transfer
ER- egg retrieval
FET – frozen embryo transfer/cycle
HPT – home pregnancy test
HSG – hysterosalpingogram (an x-ray of the fallopian tubes/uterus)
IM – intramuscular (injection)
IF – infertility
IUI – interuterine insemination
IVF – in vitro fertilization
FPs – fertile people
FSH – follicle stimulating hormone
LAP – laproscopic surgery
LH – lutenizing Hormone
LP – luteal phase
LOL – laugh out loud
LMBO – laughing my butt off
M/C – miscarriage
MF – male factor
OPK – ovulation predictor kits
PCOS – polycystic ovarian syndrome
PG – pregnant
POAS – pee on a stick
RE – reproductive endocrinologist
RL – real life (not on the internet) or IRL – in real life
S/A – sperm analysis
STIMS -stimulating hormones shot
SubQ – subcutetaneous (injection)
TTC – trying to conceive
U/S – ultrasound