If the aunt comes to play for a few days, the ovulation period will be shortened accordingly. This is because pregnancy can cause changes in hormone levels in the body, which can affect a woman's menstrual cycle. Generally speaking, the aunt will come 3-7 days a month, and the ovulation period usually occurs between the 14th and 21st day of the aunt.

However, if your aunt is more regular, there are some ways to predict your ovulation period. For example, you can predict your ovulation by measuring your basal body temperature. Basal body temperature refers to the body temperature value measured when a person measures oral or anal body temperature in a quiet state.

There are also formulas you can use to calculate your ovulation date. For example, if your aunt has a strong pattern, you can calculate that your aunt's 14th day is the ovulation period and the 21st day is the safety period.

Although these methods are not completely guaranteed to be accurate, they can help you better understand your ovulation period and thus better protect yourself.