You will need to note two key elements on a daily basis:

  1. Basal body temperature (BBT) – basal body temperature is one of the most important fertility measurements, because it confirms the occurrence and time of ovulation. You'll need to take your basal body temperature (make sure you know how do it properly) every morning at the same time.
  2. Observation of your cervical mucus – consistency of cervical mucus is the second most important indicator and needs to be observed daily. (How to make observations of the mucus?) Along with other factors, it provides information about impending fertile days, which the OvuFriend will inform you about, so you can better plan when to have intercourse.

You may also opt to check the position of the cervix (not every woman feels comfortable doing this) and carry out ovulation tests (not every woman has access to these). (How to make observations of the cervix?)

The more observations you make daily, the better OvuFriend will be able to pinpoint your fertile days and determine your ovulation date. Remember, though, that basal body temperature is the only factor that confirms the occurrence of ovulation. The rest of the fertility indicators (cervical mucus, cervix position, or ovulation tests) will only tell you your body is preparing for ovulation (which may or may not occur). Based on the body basal temperature, you can also tell if you might be pregnant or if your luteal phase (the period between ovulation and your next menstruation) is long enough to support a possible pregnancy.