A girl’s chances of getting pregnant for the first time have a lot to do with whether or not she is ovulating. If a girl’s first time occurs during ovulation, the chances of pregnancy are very high. In this case, if there is a delay in menstruation, you need to go to the hospital as soon as possible to check the blood HCG value, if the blood HCG value rises, it suggests pregnancy. If a girl’s first occurs at a time other than ovulation, the likelihood of pregnancy is lower because the patient is not susceptible to conception without ovulation during this period. Unless there are rare cases, due to emotional tension, mental stress, environmental changes, etc., caused by the premise of ovulation or after the error, for this case is also possible to get pregnant, but the possibility of pregnancy is not very high. Regardless of whether sex occurs during or outside of ovulation, if you experience delayed menstruation, it is recommended that you go to the hospital as soon as possible for a checkup.