I was without my period for 2months and went finally came i been 8days in a row with ir i feel tierd and weak should i got to my dr or i wait?

Yes: If you are feeling weak and tired, it's possible that you are anemic. Heavy menstrual blood loss can cause anemia. You also have an overactive thyroid, which, if not well controlled, can also cause excessive menses. See a doctor to make sure you're not in any danger. Consider birth control pills to help regulate cycle if irregularity continues.