You made a big mistake.
When you accepted the mission to find the smugglers' contact in the city you did not think you would be this bad off. As you strolled along the docks last night hoping to gain some information on the smugglers you stopped off at a local tavern. Your mistake was ordering a drink.
It's not that the drink tasted bad. It's not that it made you sick. It's that the drink was drugged.
Your last memory was of a smiling, fat-jowled barkeep with deep red hair. "Drink up, me fine lad," he said as he slapped you on the back. The world started to weave as he "helped" you into the back room.