Luteal phase spotting calculator

What is the probability of pregnancy based on recent spotting

The average probability of pregnancy for a healthy trying-to-conceive couple is around 20% each cycle.

Use this calculator to see how the spotting you experience increases or decreases your odds of being pregnant.

How many days past ovulation are you today?

Describe recent spotting.

NOTE: If it's early in the day and you have had no spotting yet today, then you should use yesterday and the day before, because a NO today can't be relied on until late in the day. Select your DPO yesterday, and enter the appropriate spotting based on yesterday.


*Results are based on the analysis of compiled symptom data that has been contributed by our users on this site.

See the full study: Spotting during the luteal phase and the effect on the probability of pregnancy

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