Maybe I'm being paranoid but I asked my nurse about my hiv and hep C results. She said they were negative. Anxiety disorder. Is she telling me truth?

No reason to lie. Your nurse should have no reason to lie about your results, but if you have reason to believe you've been exposed, it's understandable that you might worry. Particularly if your suspected exposure is recent, please keep in mind that followup testing is usually recommended, since the virus may not yet have reached detectable levels when you first are tested. Check with your doctor re followup.