Was i bound to lose tons of money on the river? What do you do when you hit nut flush but there's a pair on board?

PokerStars No-Limit Hold'em, $0.02 BB (6 handed) Converter Tool from (Format: Bet The Pot)

CO ($3)
Button ($3.21)
SB ($3.07)
BB ($2.01)
Hero ($3.16)
MP ($1.01)

Preflop: Hero is UTG with , . CO posts a blind of $0.02.
Hero raises to $0.08, 2 folds, Button calls $0.08, 2 folds.

Flop: ($0.21) , , (2 players)
Hero bets $0.08, Button calls $0.08.

Turn: ($0.37) (2 players)
Hero checks, Button checks.

River: ($0.37) (2 players)
Hero bets $0.3, Button raises to $1.06, Hero calls $0.76.

Final Pot: $2.49

Oh while i'm here how do I get a graph of number of hands on the x axis and amount won on the y axis on pokertracker or is it on a separate software.

i check call the river.

i got called by a villian in postion so he's got at lease a T. and being a $5 table, probably T2o. maybe T8. but on a paired board i'm trying to show down the 3rd nuts cheapish.

Not betting your flush on the river would be a bad idea, folding to the raise is probably a good idea, although since the pot remained small the entire hand I probably call anyhow.