On Bodog, first hand at the table.

I'm just getting back into poker after a couple years away from the game.

Preflop: 10c 10d

2 folds, CO raises to 0.75, 2 folds, Hero calls.
Pot: 1.60

With no reads/history, I wasn't sure that this is a 3bet?

Flop:

10h Qh Ah

Hero checks, CO bets 1.25, Hero c/r to 3.75

I this a pretty standard line? Am I getting it all in here if he comes back at me?