pf, that's a pretty marginal hand to call in the bb. Suit the A, make the 5 something closer to the T9, and it becomes less marginal, but still oop.
We flop TPMK, a gutshot, and a non-nut fd. Everyone checks, incl pf opener, hard to put anyone on sets (should be betting w a fd on the flop), AJxx probably bets as well. Hands we're worried about - middle and broadway wraps, bigger fd's, A's w bigger kickers.
Taking a stab on the blank turn is fine - are we folding to a raise? If there's a caller, what cards are we going to barrel the river?