Achieving pregnancy

• Apply Rule 2 (alternate evenings).

• When change occurs, wait until slippery sensation develops.

• Intercourse over the days of the slippery sensation give the best chance of conception.

• When intercourse occurs on successive days, as in this case (see days 13, 15, 16) the seminal fluid obscures the change in the mucus which defines the Peak. Conception is common following a single act of intercourse occurring just as the slippery Peak sensation is changing to sticky and/or clear fluid mucus is becoming thick and cloudy. This procedure provides good definition of the Peak when the mucus is too little to be seen. It may be necessary to wait until a definite change in sensation occurs before having intercourse. Pay attention to vulval swelling and softness.

• Around ovulation a lymph gland in the groin on the same side as the ovulating ovary enlarges to about the size of a pea and becomes tender when pressed. Daily examination of this gland will reveal the increase in size and tenderness. This is best done lying down with fingers straight, and pointing to the leg, so that the middle finger can feel the pulsating artery to the leg. The index finger will then be over the gland.