Honestly, I don't think repressing the guilt is going to help much in the long-run since you did something which you know (and I know) was wrong and you rightfully feel regret for that.
But that's just the first stage. The stage prompting self-reflection and growth. A lot of people sadly never reach that stage and just tell themselves "I did nothing wrong" and that's creating a private hell right there. Because to feel free and whatsoever at ease you need to live in truth.
So, yes, you did something very wrong. You're not a monster. You're not exactly the same as someone who committed the abuse ( in my understanding, you did not pay for the abusive material) but it is something serious that you need to make amends for.
So, start now. Go volunteer and help others. In time, you'll start to feel a little better. Meditate. It takes effort but you can do it.