One of those ruts!

This is starting to look like a trend for me. In the last week my big pairs are getting cracked. I realize that it does happen sometimes, but it almost seems crazy. Last night was no exception. Early I have QQ and 10-10 flops a set. The board is all unders. I was able to fold the river so I wasn't taken out. Late in the tournament, I have KK and lose to A-5 when an ace comes on the river knocking me out a few spots before the points and I was in need of the points, but if you can't push in with kings what are you waiting for. I don't think they is really anything I am doing wrong just one of those streaks. My time will come, so watch out, I may have a big pair waiting to take all your chips!