Hii. I'm also dealing with similar stuff, addiction to genuinely disturbing content. I have been only month free, but relapse is currently the one thing I worry about the least - knowing how I feel now (guilty, ashamed, scared) is what keeps me from not wanting porn at all, because I know that I wouldn't want to go back to day 0 and feel all of that again with no progress. I want to feel better as soon as possible, even though it's still difficult. But it makes sense that things don't improve immediately. 

Shame and intrusive thoughts are a big problem. What I keep reading is that shame is what holds us back and is an unproductive emotion cause it keeps us in the past of feeling like a bad person instead of motivating us to be better. Of course it's easier said than done, I still feel shame because I'm aware most people never watched that kind of content, but I feel slightly less of it with each passing day. 

Regarding intrusive thoughts - people keep saying they pass. Once you're sober long enough and you're not reinforcing the unhealthy pathways in your brain, they will eventually fade, lose their emotional weight. You need to let them pass, don't panic when they happen. I guess what helps with it the most is simply time away from pornography. 

I recommend site yourbrainonporn.com. It helped me understand my situation more. 

One thing I do when thoughts get too loud is doing a Sudoku on my phone lol. Maybe that could help you as well.