Fertility-Focused Intercourse (FFI)
Fertility-focused intercourse (FFI) is the practice of a couple timing relations to align with the fertile window identified through FABM charting, particularly the days around and preceding the Peak Day.1
In a 1992 cohort of 50 couples with apparently normal fertility, FFI using Creighton Model charting produced cumulative pregnancy rates of 76% in the first cycle, 90% by the third cycle, and 98% by the sixth cycle.1 These couples had no known barrier to conception, so the figures measure the value of finding the fertile window accurately, not the value of treating an underlying condition. The charting is the clinical act. Major professional societies recognize that timed intercourse aligned with the fertile window is a first-line strategy for couples pursuing pregnancy.2
FFI reframes the clinical question. Standard evaluation asks whether a couple's biology can support pregnancy. FFI asks whether the fertile window was accurately identified and consistently used. For couples labeled with so-called "unexplained infertility," accurate mucus pattern identification through fertility charting is frequently the missing variable. Across 7,288 cycles in 782 women, day-specific conception probabilities rose as mucus quality improved, a stronger predictor than the exact day of intercourse relative to ovulation.3 The diagnosis was not unexplained. The fertile window was not found.
FFI is not a passive strategy. It requires both partners to understand the Peak Symptom and the days most likely to result in conception. Fertility awareness identifies fertile and infertile periods and helps detect underlying pathology, functioning as a working tool for the woman and her clinician.4 The couple becomes the diagnostic unit, not just the woman.
Cited in this entry
- Hilgers TW, Daly KD, Prebil AM, Hilgers SK. Cumulative pregnancy rates in patients with apparently normal fertility and fertility-focused intercourse. J Reprod Med. 1992;37(10):864-866. https://rrmacademy.org/library/cumulative-pregnancy-rates-in-patients-with-apparently-normal-fertility-and-fert-recqv9jlhiqhkev3f/
- Optimizing natural fertility: a committee opinion. https://rrmacademy.org/library/optimizing-natural-fertility-a-committee-opinion-rechyu5vnvihyqdwy/
- Bigelow JL, Dunson DB, Stanford JB, Ecochard R, Gnoth C, Colombo B. Mucus observations in the fertile window: a better predictor of conception than timing of intercourse. Human Reproduction. 2004. https://pubmed.ncbi.nlm.nih.gov/14990542/
- The importance of fertility awareness in the assessment of a woman's health: a review. https://rrmacademy.org/library/the-importance-of-fertility-awareness-in-the-assessment-of-a-womans-health-a-rev-recmmebbcvxamvfwq/
This content is for educational purposes only and does not constitute medical advice. Consult an RRM clinician or healthcare provider for guidance specific to your situation.