If I tested positive for hsv2 antibodies but have never had an outbreak/symptoms, do I actually have herpes and am I contagious?

Past exposure. The antibodies are protein products produced to react against HSV 2, if you test positive you have had an exposure in the past and may carry the virus currently. So you have a risk of being contagious and should take appropriate precautions depending upon the circumstances. (joke: what's the difference between love and herpes. Answer: herpes is forever).