I had about 6,000 gold before selling some stuff to Tonilia in the Thieves Guild. Then I decided to rest there for 2 days so that she gets more cash. I repeated this thing a couple of times and then continued my adventure.
Suddenly I noticed I have only 1,000 gold. I have no idea how I got to this amount. I haven't purchased anything so far. Did I get robbed in the Thieves Guild while I was resting? What happened to all my gold?