How many hands is enough?

[Go Blue]

Well, I have about 15k hands logged in at this level, and it looks like a sine wave pretty much. I'm up less than 25 BB right now. I'm still not worrying yet about anything, and I KNOW that I'm getting unlucky. The question is, though, is if I'm getting unlucky more than I should be or as much as I should be. That's what I hate about poker is how you really don't know, except what you can infer from the PT info.