I fold without reads on villian...
This is a situation where I generally will fold KK or AA on flop.
With 3 callers & people calling and check raising you on a low co-ordinated flop, 1 pair is soooo rarely the best hand.
As you said you have shown a lot of strength the way you you played & I don't see 88 or what have you making a move in this spot.
I dont see a lot of flush draws/1 pair hands doing this - I really think you're smoked or up against 13 outs min.