200NL 5-max

I have $325, villain covers. I'm on the button. The CO isa little loose player, but not much more out of line than that. 34/17 so he raises quite a bit. I decide to mix things up a bit, but what to do on the flop?


HERO has :Td:

PREFLOP
CO raises to $6, HERO raises to $20, CO calls

($43 in pot)

FLOP
CO checks, HERO bets $30, CO raises to $90, HERO ??? (has $275 left and he covers)

I assume we CAN get all-in on most turns (I obv fold any non-diamond), so is this just a mathematical question? I felt kinda fishy and I suck at quick calculations. If someone could do a detalied math analysis I would be glad. I am embarrasingly horrible at those things (he could have a set or overpairs, discount outs etc etc).

Maybe I shouldn'r have got into that situation either so all comments are welcome.