New to SnG play - first hand of the tourn was AKo

[rafct]

Hi, I am a new SnG player. This is a hand I had while playing a $5+0.50 game. How should I have played it? Any advice is welcome.

I am under the gun and get dealt AKo.
I raised 5x bb.
one player made a reraise, smaller than my original raise. Others folded.. afraid of being against a pair in the beginning (any pair, the play could be too loose since its the first hand of a small buy in game) I decided to just call. Flop came Q high, he made a small bet and I called.
Turn was a blank, he bet again, this time a good amount, and i folded.

Thanks !