Can you have spotting the exact week you are supposed to get your period? and are the supposed to last all 7 days like a period?

Sounds like a period: Periods can vary in length and flow and can change over time. Of course, pregnancy is a possibility for changes bleeding patterns. If you are concerned about this, then check a pregnancy test. If no concerns, then it could be normal changes. If the pattern of bleeding lasts more than 3 months dr to check hormone levels such has thyroid. Other factors such as weight, stress, meds, and other