If you have your period on time every month and then one it two weeks early a very different flow usual could be pregnant?

It's possible, but not certain.

- Early pregnancy: Bleeding that occurs during early pregnancy is often light and brown in color, and it's usually not accompanied by the usual symptoms of menstruation, such as cramps and mood changes. Implantation bleeding, which occurs when the fertilized egg attaches to the lining of the uterus, can also occur around the time of your expected period and may be mistaken for a light period.

- Hormonal imbalances: Changes in hormone levels can cause irregular bleeding patterns, including periods that come early or late, or that have a different flow than usual. This can be caused by factors such as stress, thyroid problems, or polycystic ovary syndrome (PCOS).

- Other medical conditions: Some medical conditions, such as sexually transmitted infections (STIs), uterine fibroids, or polyps, can also cause irregular bleeding patterns. If you're concerned about your bleeding pattern, it's always a good idea to see a doctor to rule out any underlying medical conditions.

If you're concerned about a possible pregnancy, it's best to take a pregnancy test or see a doctor to confirm. Pregnancy tests are available over the counter, and most of them are highly sensitive and accurate in detecting pregnancy.