Is anovulation normal for teenagers?

Young women's ovulation can be irregular during their first months/year after the start of menses. After the body becomes accustom to the process monthly ovulation normalizes. They can ovulate before their first menses. Some women establish a pattern where ovulation and menses come only every few months.

Yes. It is more frequent around menarche and menopause. 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,