PokerStars No-Limit Hold'em, $0.50 BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Button ($54.05)
SB ($43.15)
BB ($55.10)
UTG ($42.35)
UTG+1 ($18.25)
MP1 ($24.50)
Hero ($49)
MP3 ($118.90)
CO ($72.90)

Preflop: Hero is MP2 with T, T.
3 folds, Hero raises to $2, 4 folds, BB calls $1.50.

Flop: ($4.25) 5, 7, 8 (2 players)
BB checks, Hero bets $4, BB raises to $8, Hero ???

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I had no reads on the opponent, as this was only my 2nd hand at the table.

What's your move after the minraise?