Struggling with anxiety about money and not sleeping well

The financial stuff has been weighing on me hard lately. Got a big car repair bill I wasn't expecting and now I'm lying awake at night running numbers in my head. I know logically we'll be fine but my brain won't shut off. I'm tired and irritable with the family which just makes me feel worse. Been thinking about talking to someone but not sure if that's overkill for just stress.