Frequent question: How accurate is BBT for pregnancy?

BBT thermometers are not 100 percent accurate, and some women ovulate even without an increase in temperature. False readings can be caused by a variety of things, including waking up at different times in the morning.

How accurate is BBT charting for pregnancy?

Using a BBT chart is safe, simple and inexpensive. But it’s not necessarily the best method for tracking your ovulation. With an accuracy rate of 76 to 88 percent, BBT charts are considerably less reliable than ovulation test strips. They’re also slower.

What should your BBT be if your pregnant?

Detti says. Most women’s basal body temperature is between 97 to 97.5 degrees Fahrenheit before ovulation; after ovulation, it typically ranges from 97.6 to 98.6 F. But other factors can impact basal body temperature, too: Stress.

Can BBT tell if you are pregnant?

Some women may choose to use the basal body temperature method for religious reasons. The basal body temperature method can also be used to detect pregnancy. Following ovulation, a rise in basal body temperature that lasts for 18 or more days may be an early indicator of pregnancy.

When does your BBT drop if not pregnant?

When does BBT drop if you’re not pregnant? If you didn’t conceive during the current cycle, basal body temperature will dip again roughly 10 to 14 days after ovulation. This dip usually coincides with the start of your next period.

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Can you be pregnant without a BBT rise?

BBT thermometers are not 100 percent accurate, and some women ovulate even without an increase in temperature. False readings can be caused by a variety of things, including waking up at different times in the morning.

Will my BBT rise after implantation?

If you’re not pregnant, your BBT will usually drop a few days after you ovulate and stay that way. This signals that your period has arrived or is on its way. With an implantation dip, your BBT falls as usual, stays that way for about a day, and then rises again.

How long does high BBT indicate pregnancy?

Consider holding off on testing until either your period is late or you show 16 days of high temperatures on your chart. Sixteen days of high temperatures is the best sign of pregnancy you can find on a BBT chart.

What temp is implantation dip?

An implantation dip refers to a decrease in basal body temperature of a few tenths of a degree — for example from 97.9 to 97.6°F (36.6°C to 36.4°C) — for a period of one day.