Some women choose to use an OPK along with CM and Basal Body Temperature(BBT) charting in order to pinpoint ovulation. OPKs are available at most pharmacies, and online. They cost from $12 to $35 for 5 to 9 days' worth of tests. We sell them for $9.75/5 tests

OPKs work by detecting the surge in Luteinizing Hormone (LH) that normally occurs 12 to 40 hours prior to Ovulation. Unlike HPTs, the test line has to be as dark or darker than the control. Start testing about 5 days before you expect to Ovulate (women with long cycles, wait until you see fertile-quality CM) and stop testing once you get a + result. The day after a + result may well show no line whatsoever, since LH surges and then pretty much disappears.

OPKs detect the LH surge but the only way to confirm that you have ovulated is by charting your temperature. Occasionally a woman will have an LH surge but no Ovulation, so it is important to watch for that temp shift. If you find that your OPK is always +, ask your Doctor to run some blood tests to check your hormone levels.

Finally, one successful client was told by her Doctor to use OPKs this way: test in the afternoon, between noon and 8 PM. Once you detect the surge, have intercourse that night, the following night, and the morning after that. She conceived that cycle. (This assumes a normal sperm count. If low, you may want to wait until 12 hours after you detect the surge).

Informational Links to:

Temperature Taking and Charting

Cervical Mucus and Position

Ovulation Predictor Kits

Home Pregnancy Tests

Nutrition, Vitamins, and Fertility Herbs

Midstream Ovulation Predictor Kit.

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