Should i still go to the gyno while heavily bleeding if it's been happening for 21 days?

Yes: It might be DUB dysfunction uterine bleeding may need biopsy or D and C for both treatment and diagnosis.

Yes: yes you should see your Gynecologist or PCP, but not for a pap smear. You should be evaluated for the cause of the persistent bleeding. If you're unsure about whether or not your doctor wants to see you with ongoing bleeding, call the office first.

Yes! VeryAppropriate: Heavy persistent bleeding likely reflects an abnormally heavy endometrial growth layer, unhealthy, can easily result in anemia, iron deficiency & may reflect any of a variety of more serious problems. Thus I would both find a gynecologist worthy of your trust for help & work on studying & accurately understanding the issues as your own primary medical decision maker (physician if you will).