If plan b is supposed to delay ovulation, does this also delay the period? even though my period came earlier than expected? i took plan b on the 22 november, ovulation was due on 29. my period came on 10th of december. is this supposed to happen?

You ought to take it under the supervision of a doc then things will be straightened out. Yes hormones can mess up periods if not properly given

Use over the counter Plan B if intercourse was within 72 hours to decrease the risk of unplanned pregnancy. Plan B disrupts and sometimes prevents ovulation. This can result in a change in the timing of the next period.

Agree with Dr. L. Plan B alters hormonal balance and can disrupt the rhythm of a period. If you do not wish to be pregnant, use contraception all the time, every time. You may consider implanted contraceptive, or IUD. Practice safe sex : https://www.hopkinsmedicine.org/health/wellness-and-prevention/safer-sex-guidelines Get HPV vaccine.