Thank you for sharing your question with the EmpowHER community.
A typical "normal" menstrual cycle last anywhere from 2 to 7 days. Anything longer than that is considered to be an extended menstrual cycle. Potential causes include; fibroids, cyst, temporary hormonal imbalance, etc.
Here is an article with additional information:
Reasons for a Two Week Long Period
Call and discuss your symptoms with your gynecologist.
I hope this helps,