Im female and i received fingering from a nigerian man of unknown hivstatus deep in my vagina for about 5mins. assuming he had a cut on his finger, is this a potential hiv risk?can i resume unprotected sex with my husband and do i need to get tested?

If this happened within 72 hours, see your doctor or a hospital ED to get post-exposure prophylaxis, even though the risk of catching HIV is very small. For a test to be reliable you will have to wait for a negative 4th gen test at least 6 weeks after the episode. HIV test window periods https://www.cdc.gov/hiv/basics/hiv-testing/test-types.html