Endometriosis, PCOS?

Savanna • Taking a break from ttc these days
Can anyone give me any insights about either of these two? My doctors thinks I need to look into both of these things because I have had extreme cramps and heavy periods all my life. I also have had a lot of cysts in the past as well. I am only 18 almost 19, so I feel like none of my doctors take me seriously.