I’m 23 now, I did many experiments with PE since I was 17. I did intense clamping with many cable clamps, intense pumping with high pressures (15-20 HG), intense hanging… Jelqs I did not count because I think it is too light… I think jelqs are lighter than masturbation… I never had any problem. Just some discoloration. I suffered from ED when I was in period of intense depression and stress. My ED was psychological. I have zero gains because I am lazy, I never dedicated more than 3 weeks in a routine. I am a procrastinator in all areas of my life.
I don’t know what happened to you. I feel sad for you. It’s sucks, if you really say the truth… I think is hard to injury yourself from PE.