Thanks. I know most of them, that one just really stumped me!
Yes indeed. Sorry ... we get so used to our abbreviations and we forget to spell things out sometimes. Here are some others from http://pregnancyandbaby.com/pregnancy/baby/TTC-ABCs--Preconception-acronyms-1135.htm:
2WW: Two-week wait (until you can take a pregnancy test)
AF: Aunt Flo(w), your period (menses)
BBT: Basal Body Temperature
BD: Baby dance, sex
BFN: Big Fat Negative (test result)
BFP: Big Fat Positive (test result)
BMS: Baby-making sex
CB: Cycle Buddy (someone who shares the same menstrual cycle/ovulation dates)
CD: Cycle day
CF: Cervical fluid
CL: Corpus luteum
CM: Cervical mucus
CP: Cervical position
CY: Cycle
DI: Donor Insemination
DP: "Dancing" partner; spouse or significant other
DPO: Days past ovulation
DTD: Doing the dance, sex
EW: Eggwhite (re: consistency of cervical mucus)
FTTA: Fertile Thoughts To All
FMU: First morning urine
hCG: Human Chorionic Gonadotropin (pregnancy hormone)
HPT: Home Pregnancy Test
IF: Infertility
IUI: Intra-uterine Insemination
IVF: In Vitro Fertilization
LH: luteinizing hormone
LMP: Last Menstrual Period
LP: Luteal phase
O: Ovulation
OPK: Ovulation predictor kit
PCOS (POS): Polycystic Ovarian Syndrome
PG: Pregnancy, pregnant
S/A: Sperm/semen analysis
TCOYF: Taking Charge of Your Fertility (book)
TTC: Trying to conceive