Hi guys^^ lately I found myself in this hand of nl100 6max
Me BB 100$ , UTG 74$ occasional player, Cut off 143$ a Tag reg.
I'm in the BB with 3s3h, utg limps and cut off raises to 4$, I call and utg calls .
Flop comes 3c 5h 7s rainbow, I check (should I donk bet here??), utg checks, CO bets 8,5$ and call to let utg call as well so he does!
Turn is an 8s, I check, utg bets 15$, CO raises to 39$! 
So 87x deep should I call/push/fold???Any decision seems legit to me after this action!
Thanks every1!