I anyone is confused about all the abbreviations on websites regarding trying for babies or being pregnant (like I was). Here is a list I have just found which may help. AC - Assisted Conception AF - Aunt Flow (period) AI - Artificial Insemination AID - Artificial Insemination with Donor sperm AIH - Artificial Insemination with Husbands sperm ART - Artificial Reproductive Technology BBT - Basal Body Temperature BD - Baby Dancing (sexual intercourse) BFN - Big Fat Negative (pregnancy test) BFP - Big Fat Positive (pregnancy test) BW - Blood Week (period) CD - Cycle Day CF - Cervical Fluid CM - Cervical Mucous DI - Donor Insemination DPO - Days Past Ovulation ER - Egg Retrieval ET - Embryo Transfer EW/EWCM - Egg White Cervical Mucous FET - Frozen Embryo Transfer FM - Fertility Monitor FSH - Follicle Stimulating Hormone GIFT - Gamete Intra Fallopian Transfer HPT - Home Pregnancy Test ICSI - Intra Cytoplasmic Sperm Insertion IUI - Intra Uterine Insemination IVF - In Vitro Fertilisation M/C - Miscarriage O - Ovulation OHSS - Ovarian Hyper Stimulation Syndrome OI - Ovulation Induction OPK - Ovulation Predictor Kit OPU - Ovum Pick Up PCOS - Poly Cystic Ovarian Syndrome PG - Pregnant POF - Premature Ovarian Failure TMI - Too Much Information TTC - Trying To Conceive U/S - Ultrasound 2WW - Two Week Wait (Between ovulation and period due) Good luck to everyone. xx