You can get pregnant if you have intercourse without a condom before ovulation.
For women with normal menstrual cycles, ovulation usually occurs 14 days before the next menstrual period. If the menstrual cycle is irregular and the time of the next menstrual period is uncertain, ovulation will also be uncertain.
If you have sex before ovulation and do not wear a condom, a small amount of semen may enter the woman’s body, and the sperm may combine with the egg to form a fertilized egg, and you may become pregnant.
In addition, ovulation is affected by many external environments, internal emotions and stress, etc. Unexpected ovulation may occur, and if you do not use contraception during intercourse, you may become pregnant unexpectedly.
Therefore, if there is no need to prepare for pregnancy, it is recommended to use contraception during intercourse. If there is a delay in menstruation, it is necessary to consult a doctor for a clear diagnosis.