I cant tell you what your nausea was, if it was a sv or anxiety, but i would assume that after 48 hours you should be fine. I had 2 sv this year, all the children got it at varying degrees, but my husband and i just had 24 hrs of nausea, so yes, it is possible to have a sv just with that. I also had noro in 2005 and 1998, i didnt v any of those times either x