Wet. ?

This might be TMI, I'm not sure. Anyway, I get wet 'down there' easily. I don't even do anything. But every time I go to the bathroom, my panties are wet. I change panties a lot because they never seem to be dry. I even went to the doctor and she says 'it's a woman thing'! 
​My question is, who else has this? Or what do you think it is?  I know it's a stupid question but I'm tired of it. ?