Ovulation is also possible the day after menstruation ends.
The menstrual cycle is divided into the follicular phase, the luteal phase and the menstrual phase. Of these, the follicular phase is the time between the first day of the end of menstruation and the day before ovulation, and it varies greatly in length from individual to individual. For example, women with shorter menstrual cycles have shorter follicular phases, and mature follicles may develop and be discharged just after the end of menstruation, followed by the luteal phase.
In addition, a woman’s ovulation is not always the same, the day after the end of menstruation due to emotional stress or changes in the living environment, may also occur in the case of stress ovulation.
As you can see, ovulation can also occur the day after menstruation, so sexual intercourse can also lead to conception, and if you have no plans to have children, you should take proper contraceptive measures.