Irritated towards my husband

I am feeling irritated towards my husband. It’s been going on for a while. We are planning on getting married in August.

We already have 2 children and have been living together for 15 years. I have been pushing to get married for a while, mainly for protection in case something happens.

I have done a thought download and I’m having trouble doing a model with my download because it’s all thoughts. I don’t find any circumstances. I have dozens of negative thoughts around him but can’t find the one that is causing the emotion of anger and frustration.

Can it be a mixture of thoughts festering together? How do I get clarity?