Af came yesterday or so I thought

Mary • Married 5/26/12. Police wife. Emergency room RN.
So af came yesterday, what I thought was af. It was kind of heavy to start, but this am was all but gone... Usually I bleed for 4-5 days. I had some cramping but I was also really nauseated this morning... Just wondering if I should test.. Don't have any at home so I didn't know if I should run out and get one. Anyone else have a 1 day period??