Looking for a popular subject? Just click on a tag!

toxic shock selfie adolescent development teen behavior cramps breast bud breast early puberty gardasil love vagina friendship skipped period self esteem consent homosexuality question of the week organic emerging sexuality moods Playlist pornography transgender sex ed body language pre-school parenting teens mental health voice pregnancy pap smear pubic hair period TEDx Greenville e-cigarettes environmental toxins ego early development masturbation boys' puberty menstrual calendar breast growth breast buds gratitude vaccine menstrual period new moon girls self-acceptance anxiety Gonorrhea sexuality ed menarche STI 5th grade sexual desire puberty menstrual cramps queer sexually transmitted infections development STEM healthy relationships cancer social media parenting teen porn parent-child girls puberty harassment play list Intern hormones oral sex teen pregnancy prevention condoms prom dating violence early childhood anatomy menstruation self worth first period 4th grader Let's Talk gifts social development abstinence risk taking bra #notyourgirl teen identity breast development LARC warts premature puberty Trish Hutchison sexual abuse prevention body image cervical cancer breast size good for you girls nonconsensual pornography birth control vaginal odor red flags sexual development book review sexting father-daughter teen dating teen dysmenorrhea hygiene hpv music cell phones condom STD 4th grade friends irregular period adolescents sexuality teen brain preteen uterus pillow breast pain middle school parenting TEDx AIDS bisexual cancer prevention Melisa Holmes periods promise ring teen relationships Herpes girlology smoking something new about you HPV vaccine parenting tween dating vaginal discharge relationships touch hunger precocious puberty contraception prevention normal period powerful girls the talk knixteen menstrual cup boys puberty LARCs parent-child connection sex Sex Talk reproduction instagram self confidence acne vulva emotions Chlamydia sexual health road show tampon vaccination Trichomonas revenge porn there's something new about you spencer george HIV tween friendships eating disorder period cramps coming out KTFF body odor communication vaping toxins

Last week, we received several questions about irregular periods:

  • Isn't it normal for the first year of periods to be irregular?
  • My daughter got her first period at 12, then didn't get another period for 4 months.  Is that ok?
  • My daughter’s periods are completely unpredictable.  When should I worry?


Irregular periods may seem like the norm for young girls, but there’s a predictable pattern that the vast majority of girls will follow during the first few years of periods. By keeping track of her periods on a calendar, you and your daughter will be able to recognize what’s normal and what’s not.

To calculate cycle length (which is important) remember to count the number of days...