Try it
OBG · Infertility and contraception: Standard Days Method
Sample itemA woman with regular cycles of 26 to 32 days chooses a fertility-awareness method using a string of coloured beads. On which cycle days should she avoid unprotected intercourse?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
D. Days 8 to 19
The Standard Days Method identifies days 8 to 19 as the fertile window for women with cycles of 26 to 32 days. The beads mark the days to avoid or to use a barrier. The method is unreliable if cycles fall outside this range.
Option by option
A. Days 12 to 16
Days 12 to 16 are too narrow to allow for cycle variation and sperm survival.
B. Days 1 to 7
Days 1 to 7 are before the fertile window.
C. Days 20 to 28
Days 20 to 28 are after ovulation in these cycles.
D. Days 8 to 19 (correct)
Correct. Days 8 to 19 are the fertile window for this method.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
More OBG questions
- Antenatal careA woman's last menstrual period began on 10 January 2026. Using Naegele's rule, what is…
- Obstetric drugsCarboprost (15-methyl PGF2α) is contraindicated in which condition?
- Hypertensive disorders of pregnancyA primigravida at 34 weeks has a blood pressure of 150/100 mmHg on two occasions and 2+…
- Obstetric immunologyAn Rh-negative mother delivers an Rh-positive baby. When should anti-D immunoglobulin be…