Hello good evening i have my menstral for 3 weeks now that's not normal for me dress very sore sleepy im very drowsy could you please tell me what's?

DMB: You're having dysfunctional menstrual bleeding. Rule out pregnancy (miscarriage) first. You will need to discuss it with a doc and get on hormonal pills to stop it provided you are not pregnant and your exam is, otherwise, normal.

See a doctor: You really need to see a doctor because period for over 3 weeks is not normal as you said. Your problem has many causes and you need to get a complete exam and blood test.