DescriptionWhat is the risk of pregnancy if you had sex today? Use this app to find out if it is safe. For a regular 28 day cycle, days 9 to 18 are considered high risk days as ovulation usually takes place on day 15. However, even if it is safe, you should still always take precautions. A regular menstrual cycle can sometimes become irregular and this can bring unforeseen risks. This app is not meant to replace medical advice (and contraceptive measures) but only a general guide to risky days (and safe days). Good to use this app in tandem with other precautions. On the other hand, if you are trying to get pregnant, then this app would also be useful as it calculates the most fertile days.