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Notes:
Since sperm can only move 2 to 3 mm per minute using their own power, they must be helped along somehow. At the shortest, sperms can be found in the oviducts only 5 minutes after ejaculation. Other sperms can take 45 minutes.
The Natural Family Planning method of attempting pregnancy relies on changes in mucus thickness for the timing of intercourseóthe character of the mucus is a good indicator of the presence of a viable egg.
