(HealthDay News) - A regular, healthy menstrual cycle is a good indicator of a woman's reproductive health. If you have problems with your period, see your doctor.

Here's a list of warning signs that something may be wrong, provided by the U.S. Department of Health and Human Services:

* If you have no menstrual cycle by age 15, or within three years of breast development.
* If you have no period for more than 90 days.
* If you suddenly have irregular periods after having had regular periods consistently.

When a younger woman is put on a blood thinner the doctor or nurse isn’t likely to tell her, “Guess what, this is probably going to make your period a bit of a challenge. It came as a big surprise to me,” said Eliz Greene who is 42 and currently takes Plavix®. “Talking about the “Icky Period” problem is very important, so women don’t think they are the only ones out there going through it.”