Should I push to be checked for endo?

I’ve had a very difficult period since my very first one- I was at the end of 5th grade and bled for (give or take) 10 weeks. I struggled with severe cramping as well, and (big surprise) became anemic. I’m 26 now and have had quite the journey. For years I’ve been on and off birth control (that’s been the drs solution to regulate me and it does help) but as I’m getting older I don’t want to continue this route. They’ve tested me for pcos twice in the past 7 years. First time stemming from the passing of palm sized blood clots. And recently again last year when I had to get my first blood transfusion due to blood loss during my period. They had also checked for uterine and cervical cancer which thankfully was not the case. Currently I’ve been on my period for 30 days now and I just am not sure where to begin.