Vampire with Herpes

I\m a vampire, and I prowl during the night.
You'd better lock your doors because I bite.
If I enter your house, I will suck you dry.
I'll drink your blood, and you will die.
When I meet people, they aren't pleased.
I drank a man's blood who had herpes.
Because of that man, I have herpes as well.
My genitalia fell off after it started to swell.
I should've been more careful when I sucked.
I chose the wrong victim, and I'm out of luck.