Should I be raising this flop? I figured it was dry enough to flat and with the turn lead I can't see villain doing this with anything but top pair

18/0 over a small sample size

PokerStars No-Limit Hold'em, $0.05 BB (6 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

saw flop

Hero (Button) ($5.38)
SB ($10.07)
BB ($6.22)
UTG ($6)
MP ($10.71)
CO ($6.89)

Preflop: Hero is Button with 7, 9
3 folds, Hero bets $0.20, 1 fold, BB calls $0.15

Flop: ($0.42) A, 7, 2 (2 players)
BB bets $0.15, Hero calls $0.15

Turn: ($0.72) 3 (2 players)
BB bets $0.35, Hero folds

Total pot: $0.72 | Rake: $0