It`s been one month and still nothing....
i give 2 weeks more and thats it...
I think this is not about luck!!!
You probably got 626 H/s while nethas it 19169 KH/s. So it may look like you got a high hash compared to nettwork but if you take them in same scale it is 626 vs 19169000.
And then you see why people are mining in pool

I had 2000 H/s and i prefered pool, and that was when nettwork hash was much lower.