This list includes many TTC terms that may not apply to many members, but this is a list that was compiled by the TTC ladies. Feel free to post more that should be added.

AF ... Aunt Flo (menstruation)
BBT ... Basal Body Temperature
BD...Baby Dancing (Love Making)
BCP ... Birth Control Pills
BFN...Big Fat Negative (Pregnancy Test Negative)
BFP...Big Fat Positive (Pregnancy Test Positive)
BOB...Baby on the Brain
B/W, b/w ... Blood Work
CB ... Cycle Buddy
CD ... Cycle Day
CIO ... Cry it out
CL...Community Leader
CM ... Cervical Mucus
D&C ... Dilation & Curettage
DF ... Dear Friend/Fiance
DH... Dear (or whatever other D word seems appropriate at the time) Husband
DD/DSD ... Dear Daughter/Dear Step-Daughter
DP ... Dear Partner
DS/DSS ... Dear Son/Dear Step-Son
DI ... Donor Insemination
DPO ... Days Past Ovulation
DPIUI ... Days Past IUI
DTD ... Do The Deed or Did The Deed
EN ... Extended Nursing
ET ... Embryo Transfer
EW...Egg White Consistency (related to CM)
EWCM ... Egg White Cervical Mucous
FET ... Frozen Embryo Transfer
FSH ... Follicle Stimulating Hormone
GP ... General Practitioner
HPT ... Home Pregnancy Test
HSG ... Hysterosalpingogram
HTH ... Hope That Helps
ICI ... Intra-cervical Insemination
IF ... Infertility
IUI ... Intra-uterine Insemination
IVF ... In Vitro Fertilization
JK ... Just Kidding
JM(H)O ... Just My (Humble) Opinion
KWIM...Know What I Mean
LAP ... Laparoscopy
LH ... Luteinizing Hormone
LMP ... Last Menstrual Period (start date)
LOL ... Laughing Out Loud or Lots Of Love
LPD ... Luteal Phase Defect
MC, m/c, misc. ... Miscarriage
NP ... Nurse Practitioner
O ... Ovulation
OB/GYN ... Obstetrician/Gynecologist
OMG ... Oh My Goodness!
OPK ... Ovulation Predictor Kit
OT or O/T...Off Topic
PCO, PCOD ... Polycystic Ovary Disease
PCOS ... Polycystic Ovarian Syndrome
PG ... Pregnant
PID ... Pelvic Inflammatory Disease
PMS ... Pre-menstrual Syndrome
POAS ... Pee On A Stick
PP ... Post Partum
PPD ... Post Partum Depression
RE ... Reproductive Endocrinologist
RI ... Reproductive Immunologist
ROTFLMAO ... Rolling on the floor laughing my a$$ off
SA ... Semen or Sperm Analysis
STD ... Sexually Transmitted Disease
TTC ... Trying to Conceive
US, u/s ... Ultrasound
UTI ... Urinary Tract Infection
*IL ... *(whatever) In Law