All right. After a big losing streak last month I've decided I need to do something about my play. So far I've only read posts here, not shared my trouble hands, mostly because I'm sorta embarassed over when things go wrong/bad reads. But, as they say, only one way of learning, so criticize away...

Villain here is unknown to me, just came into the table. 120 hands later he reads at 18/15/3, but that ofc won't help me this hand.

$0.5/$1 No Limit Holdem
6 players
Converted at weaktight.com

Stacks:
UTG ($78.13)
UTG 1 ($112.09)
CO ($110.53)
BTN ($135.74)
Hero (SB) ($111.69)
BB ($34.43)

Pre-flop: ($1.50, 6 players) Hero is SB
UTG raises to $2, 3 folds, Hero raises to $10.50, 1 fold, UTG calls $8.50

Flop: ($22, 2 players)
Hero checks, UTG bets $11, Hero raises to $27.50, UTG goes all-in $56.63, $29.13 to Hero ($73.69)?



I'm figuring he's on an overpair or a flushdraw, though the 4 hands that beat me, AA, 22, 33 or 32creeps up in my mind. And that has been my problem lately, I get insecure about big hands. Call all-in right play?