Your period is due the 15th of this monthThis Saturday you got gross dark brown mud-like discharge yesterday 11th then it turned into lighter than your but heavy enouf 2 be 1?

Based on the information provided, it is possible that your period has arrived early. The dark brown discharge you experienced on the 11th could be a sign of the beginning of your period, as it is common to have spotting or changes in discharge before the start of menstruation. The lighter brown discharge you are currently experiencing may also be a sign that your period is ongoing.

However, it is also possible that the discharge you are experiencing is not related to your period. Some other potential causes of brown discharge include:

* Implantation bleeding: This occurs when a fertilized egg implants in the lining of the uterus. It can cause light bleeding or spotting, which can be brown in color.

* Ovulation bleeding: This occurs when the ovary releases an egg during ovulation. It can also cause light bleeding or spotting, which can be brown in color.

* Intermenstrual bleeding: This is bleeding that occurs between periods. It can be caused by a variety of factors, including hormonal imbalances, stress, or certain medications.

* Uterine fibroids: These are non-cancerous growths that can form in the uterus. They can cause heavy bleeding, prolonged periods, and spotting between periods.

* Endometriosis: This is a condition in which the tissue that lines the uterus grows outside of the uterus. It can cause pain, heavy bleeding, and spotting between periods.

If you are concerned about the discharge you are experiencing, it is important to talk to your healthcare provider. They can help determine the cause of the discharge and recommend appropriate treatment if necessary.