Did I quit too soon?

[JPNet]

10 handed, hero is in ep1 with KcTc

hero calls, ep2, mp1, mp2 call, mp3 raises, co, button, bb, hero, ep2, mp1, mp2 call. 8 to the flop.

Flop(15 1/2 SB) J [img]/images/graemlins/spade.gif[/img]9 [img]/images/graemlins/diamond.gif[/img]8 [img]/images/graemlins/diamond.gif[/img]

hero, ep2 check, ep3 bets, mp1 calls, mp2 raises, co calls, button 3 bets, bb folds, 3 bets to hero who folds.

I have an OESD, an overcard, the pot is very large, but at least 2 people are showing strength and I would have to call 3 bets cold. Straightforward laydown?