Don't understand how i could be + hsv2 only had sex with 1 man my whole life husband & he's never had an outbreak. and my mother didn't transfer it c-?

This isn't unusual: If you had positive test for HSV2 from a blister, sore etc then for sure you have it. If by blood test, maybe need confirmatory testing to be sure you really are infected. If you are: many people have HSV2 with no outbreaks or other symptoms. So your husband probably is infected from past partner. He can be tested to know for sure. Consider seeing an STD or infectious diseases expert. Good luck!