How we collect bad karma?

I'm a student, and I'm getting weird instant bad thoughts to hurt my mom without any reason coz of my anxiety. they are not delibarete by any means.but I have never hurt her verbally or physically. But this anxious thoughts annoy me a lot coz I love my mom a lot. She is the best. I try my best to avoid them. Does this collect bad karma? Please help me I feel so guilty without any reason as I never want to hurt my dear mom even with a thought. At times I feel like I overthink about it even. She doesn't know that those things exist even.