Annoyed with my mind.... Needing support

I'm so annoyed with my mind. I thought about my ex N all morning. I've been having nightmares of him a few times a week. I'm doing the work and maybe that's why I'm annoyed. I'm strong and won't contact him or unblock but I feel like I need to have more patience with myself and feel proud of my self but I'm so annoyed and angry that this shithead and I have memories together. It feels like as the fog clears the more grossed out I get. The more angry I get... Did this happen to anyone else?