Infertility

Amy Stevens: "You'll do anything you think will help you, but I'd have months where nothing would show." Then she decided to try the OV watch.

It's an FDA approved device that works by measuring changes in sweat ions.

It can predict ovulation five days in advance, allowing couples to maximize their fertile window and giving them more chances to conceive.

Urine sticks predict only your two most fertile days.

Eldon Schriock, M.D., Pacific Fertility Center: "One of the most common mistakes this may prevent is people tend to try to hit the day of ovulation and they end up having sex too late." Dr.

Eldon Schriock is a reproductive endocrinologist with Pacific Fertility Center in San Francisco.

Dr.

Schriock: "I think the disadvantages are just the same as the LH kits.

It does create anxiety among patients, sort of tonight's the night.

Husband's in L.A., you got to fly home now." The price tag of nearly $200 for the watch and a three months supply of sensors may seem steep, but not to Amy Stevens.

After four months of wearing the watch, she's now pregnant.

Amy Stevens: "The best investment I ever made." With the ultimate pay-off due July 3rd.

Another clinical trial is underway right now comparing the watch to the urine sticks.

That research is expected to be completed this fall.

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