You had your period for the month of July and no August then it comes September without sex in volves can hormones change cycle?

Yes, hormone changes can definitely affect your menstrual cycle.

There are several factors that can cause your cycle to change, including:

* Hormonal imbalances: Estrogen and progesterone are the two main hormones that regulate the menstrual cycle. If the levels of these hormones are out of balance, it can cause changes in the timing, duration, and heaviness of your period.

* Stress: Stress can lead to the release of hormones like cortisol, which can disrupt the menstrual cycle.

* Weight gain or loss: Significant weight gain or loss can also affect your menstrual cycle.

* Certain medications: Some medications, such as birth control pills, antidepressants, and thyroid medication, can cause changes in the menstrual cycle.

* Medical conditions: Certain medical conditions, such as thyroid disorders, diabetes, and polycystic ovary syndrome (PCOS), can also affect the menstrual cycle.

If you are experiencing significant changes in your menstrual cycle, it is important to talk to your doctor to rule out any underlying medical conditions and to discuss treatment options.