I’m not sure if i’ve ever tried Slynd, but i tried various different pills, shot, iud, and rings and they would work for me for a while and then the pain would come back. For me, changing up my diet was a game changer! I started out going gluten free and reducing other inflammatory foods and it has really helped! Every body is different though and I know some people where birth control works great. I feel like there’s not a lot of information out there about endometriosis treatments and it’s mainly just about trying different things until you find something you like! best of luck to you and I hope you find the relief you are looking for because I promise it is out there!