All his injuries had mended themselves like it was with the vampires.
“…Have I become a vampire?”
If so, then the thirst he felt was the thirst for blood.
The instance the thought about blood crossed his mind, he felt a wave of thirst flood him so strong that it almost made his whole body tremble. Tasting blood would grand him a lot of pleasure. He knew it instinctively.
Lifting his head, he took in his surroundings. He was in Nald Vine’s residence. Plenty of barrels were left lined up against the wall. They contained blood, he knew. But he didn’t find that blood appetizing. So it looked like he couldn’t drink spoilt blood.