Anxiety from last relationship

I was dating some for a few months at the beginning of last year. That relationship took a big toll on my mental health. I felt like I couldn’t say no to a lot of things (***, video stuff, etc; nothing in person), and just overall was not a good position I was in. Anyways, now I am in a very healthy, very happy relationship, with someone that knows what happened and is very supportive. But I still get very bad anxiety about the situation. Some days it’s not too bad, but other days it’s all I can think about. I’m just looking for any advice