an easy fold on 4th. However,if U do decide to play 5th, PLAY it ALL the way and see the last card.
Otherwise,do not play 5th.
It seems as if it might cost U more than 1/2BB on 4th to continue.
Hence, if U do play on 4th for multiple bets,U are committed to playing ALL the way. The pot will then become too large to fold on 5th. I believe by playing 4th,U will compound your error--since U will probably have to continue with a hand that offers very little hope of winning.
Happy pokering,
Sitting Bull