Flush, Turn Pairs, Villain Overbets River

Villain is 22/0/0.5 over 31 hands, so he is basically an unknown at this point. When I got min-raised on the turn I called, planning to c/c a reasonable river bet on a safe card. Villain then overbets the river… there goes my plan… I tend to find an unknown min raising the turn on a paired board is a pretty strong line. I guess to fold I have to assume this opponent limps AA/QQ utg and doesn’t raise a set on a monotone flop :s… Bigger flush is a more likely possibility maybe. Fold/call?

Poker Stars, $1/$2 NL Hold’em Cash Game, 8 Players
LeggoPoker.com – Hand History Converter

UTG: $297
UTG+1: $200
MP1: $523.10
MP2: $200
CO: $267.15
BTN: $139.75
SB: $362.90
Hero (BB): $216.05

Pre-Flop: J 8 dealt to Hero (BB)
UTG calls $2, UTG+1 folds, MP1 calls $2, 4 folds, Hero checks

Flop: ($7) Q 3 A (3 Players)
Hero bets $6, UTG calls $6, MP1 folds

Turn: ($19) 3 (2 Players)
Hero bets $14, UTG raises to $28, Hero calls $14

River: ($75) 7 (2 Players)
Hero checks, UTG bets $90, Hero still calls??