Is it possible for a woman to have change in her period and not be pregnant?

Yes, it is possible for a woman to have changes in her period and not be pregnant. There are many factors that can affect a woman's menstrual cycle, including:

* Stress: Stress can cause a woman's period to be late, early, or even skip a month altogether.

* Diet: A sudden change in diet, such as starting or stopping birth control pills, can also affect a woman's period.

* Exercise: Intense exercise can sometimes cause a woman's period to be late or irregular.

* Medications: Certain medications, such as chemotherapy and antidepressants, can also affect a woman's menstrual cycle.

* Medical conditions: Medical conditions, such as thyroid problems, diabetes, and polycystic ovary syndrome (PCOS), can also affect a woman's menstrual cycle.

If you are concerned about changes in your menstrual cycle, it is important to talk to your doctor. They can help you determine the cause of the changes and recommend treatment, if necessary.