Runner Runner Top Two

[lehighguy]

$1000 NL Live Game

Hero has AQs on button. Min raised and 3 callers including hero.

Flop: 7,2,4 rainbow
Checked around

Turn: A
check, check, CO bets $50 ($95 in pot), hero calls (throw in a hundred chip intending to raise, but forgot in live games thats a call if you don't say anything).

River: Q, no flush
CO checks, hero bets $100, CO Raises to $300, hero calls.

I had intended to check through the river but when I hit top two I bet. Can I fold to this raise?

Results below:











Villian has 53 for wheel.