How long is a normal period(if any)? I am on day 28 of mine.

Hello everyone, I 23F have been experiencing the longest period of my life. It is not spotting bleeding either. I have had this period for 28 days, minus a three-day short break of relief I had, after the three day it started back up and hasn't stopped since.

I am 5'2" and weigh about 137 pounds. I am a Latina woman and I do smoke marijuana, which I have been slowly weaning because of a bad anxiety attack I got where my heart supposedly reached about 193(according to my Apple Watch). I do have bouts of anxiety and depression and with a program I am currently enrolled in I am anxious about it. I have been on the Depo shot since December with my last shot being June 24th. I had Nexplanon prior and never experienced this long of a period, I would have two periods a month at times but spaced out more. This is a long consistent period.

I have an appointment with an OBGYN in August but it is farther out. I want to know if anyone has ever experienced a 28 day period before that's still ongoing? Is my body just not aligning with birth control?

My primary said if I had consistent bleeding, lightheadedness, dizziness, or palpitations, I would need to go in for a in-person appointment. I have only had consistent bleeding and palpitations idk with anxiety I have felt a racing heartbeat and pounding at times. I just believe it is because of the anxiety I don't have like a skipped heartbeat. I have had more headaches in recent time(one was absolutely horrible I had to throw my headphones off because of the amount of pressure my head felt) but that's all I can think of.

Has anyone had any experience with this? (Sorry if I take a bit to respond posting this before I go to a family dinner).