AQs OOP 100$ 6max

[gsdavid]

ok, so ive expanded my range a bit more, now im at 21/15 and im kinda struggling with reads since ppl are willing to play back at me with anything..
anyhow..its 4handed and im dealt in SB
utg limps and i raise it to 5bb, loose, semi aggresive BB calls
flop is
pot 11bb
i bet 7bb into it to make it as milking bet..
BB calls and turn brings
so basically now i feel good because im beating any smaller pp's that might floated me so i decide to check to try to keep pot small if he has K
so i check, he bets 15 bb into 25 bb pot..
i think for a little and figure that he could be bluffing me or he might have some Q as well(as well as K) so i figure my FD could still be good
river is and hero bets 22BB into 55 bb pot..
villian quickly miniraises to 44bb..hero?
basically i decided to bet 22 bb so that Kx would not check behind..
or will almost any K bet here so should i just C/C river?
tnx

[Cooper]

[T-Rod]