Yeah, this is normal, but of course, you will never enjoy that it happens.
Just as an example of skewed results, at the moment I have played 3012 hands of SH at Titan. In those hands I have had AA 21 times. So far, it hasn't lost for me.
Now that's good. AA is the best hand, it should win. But 100% of the time?
It means that sooner or later, and probably very sooner, I am going to have my bullets cracked. Will that be by a better hand? Not possible. Not preflop, anyway. But it is going to happen, and when it does, it will quite likely be against some fool who plays 58os and hits a river straight. (This happened the other day on Pacific. Next hand against same guy, I got AKs and got all in preflop, he showed AA, and I didn't get lucky). And it will be for a big pot. And I will curse. And then I will continue to play the same way, because it is winning play.
Because you have been playing correctly, you have the bankroll to sustain this kind of result. If it continues like this, move down a level, and keep playing correctly. Enjoy playing poker. Even when you get this kind of result, because this won't be the only time it happens to you.