Mrs Amaka and her husband had been trying to conceive for 10 months with regular, timed intercourse. But without a scan, they were timing by calendar — and potentially missing the actual ovulation window by days. Follicular tracking at Mascot Healthcare identified her dominant follicle on Day 12 and she conceived that cycle.
Nurse, Yaba. Presented with 10-month history of failing to conceive (primary infertility). Regular cycles (28–30 days). No prior gynaecological diagnosis. Husband: semen analysis normal. Referred for serial follicular tracking ultrasound to confirm ovulation and identify the optimal window for timed intercourse.
Follicular Tracking ScanMrs Amaka and her husband had started trying to conceive shortly after their first anniversary. They had read every article, downloaded an ovulation app, and had timed intercourse to the Day 14 calendar method consistently for 10 months. She tracked her basal body temperature. She used LH strips. Everything suggested she was ovulating on Day 14. Nothing happened.
As a nurse, Mrs Amaka had a clinical understanding of the process — which, she admitted, made the 10 months harder, not easier. She knew the statistics. She knew that at her age and with regular cycles, conception should not be this slow. She asked a gynaecologist colleague for advice. "Have you had a follicular tracking scan?" the colleague asked. She had not.
The scan series began on Day 8 of her cycle — a baseline to identify the antral follicle count and confirm no residual cysts. Day 10: a 12 mm follicle in the right ovary. Day 12: 19 mm — dominant, mature. "This follicle will ovulate in the next 24–36 hours," the sonographer said. "Tonight and tomorrow are your best window."
Ovulation prediction by calendar (Day 14 of a 28-day cycle) is an average — not a fact. In reality, ovulation varies significantly between cycles and between women. Follicular tracking ultrasound tracks the growth of the dominant follicle and confirms ovulation — pinpointing the actual fertile window with precision that calendar methods cannot match.
Twelve months without conception defines infertility requiring investigation; at 10 months, early investigation is appropriate, especially above age 30.
Intercourse timed to calendar Day 14 — may miss ovulation occurring on Day 11 or Day 17 in cycles that vary around 28 days.
Husband's semen analysis excluded a male factor — focusing investigation on the timing and confirmation of ovulation.
Regular cycles suggest ovulation is occurring — but do not confirm it. Follicular tracking both confirms ovulation and identifies the precise day.
Ten months of trying creates significant emotional stress — a tracking scan gives actionable information and a sense of control.
Mrs Amaka's deepest fear was not that she wasn't ovulating at all — her regular cycles made that unlikely. Her fear was that she was ovulating at a different time than she thought, and that 10 months of intercourse had been mistimed. She had started to consider more invasive investigations — fallopian tube patency tests, hormone panels — before the tracking scan was suggested.
The tracking scan resolved the uncertainty immediately. The follicle was growing normally. Ovulation was imminent. The timing recommendation was specific. The investigation she needed most was the least invasive one available.
Day 8 baseline: antral follicle count 9 right, 8 left — good ovarian reserve. No residual cysts. Endometrial thickness: 6.8 mm (proliferative phase, appropriate for Day 8). Day 10: right ovary dominant follicle 12.2 mm — tracking normally. Endometrium: 8.4 mm trilaminar.
Day 12: right dominant follicle 19.4 mm — mature, expected to ovulate within 24–36 hours. Endometrium: 10.2 mm trilaminar (optimal receptivity). Advised: timed intercourse Day 12 evening and Day 13 morning — the 36-hour fertile window bracketing ovulation.
Day 14 confirmation scan: follicle had collapsed — free fluid visible in the Pouch of Douglas. Ovulation confirmed. Endometrium 12.1 mm — optimal for implantation. Mrs Amaka and her husband were advised: implantation would occur, if successful, in 6–10 days.
Dominant follicle: right ovary, 19.4 mm on Day 12. Ovulation confirmed Day 13–14 (collapsed follicle, free fluid). Endometrium: 12.1 mm trilaminar — optimal. AFC: good ovarian reserve.
Timed intercourse Day 12 evening and Day 13; pregnancy test Day 28; if positive — early pregnancy scan at 6–7 weeks; if negative — repeat tracking next cycle.
Pregnancy test Day 28: positive. Early pregnancy scan at 6 weeks 4 days: intrauterine pregnancy, heartbeat 126 bpm. Dating scan at 12 weeks: all normal.
Mrs Amaka conceived in the first tracked cycle. She delivered a healthy baby boy at 39 weeks 2 days. "The scan found the window we had been missing for 10 months," she said.
Ten months of unprotected intercourse without conception in a woman with regular cycles often has a simple explanation: mistimed intercourse. Follicular tracking identifies the actual ovulation day — which may differ significantly from the calendar Day 14 assumption.
Follicular tracking is the least invasive, most immediately actionable investigation for couples not conceiving. It should be considered before more complex investigations when cycles are regular and semen analysis is normal.
If you've been trying to conceive for several months with regular cycles, a follicular tracking scan may show you the window you've been missing. Calendar Day 14 is an average — the scan gives you the actual day.
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