playing pocket pairs, one overcard on flop

somewhat common situation, happened again tonight. no reads on table, i have TT 5 handed, utg bets, i raise, CO folds, SB reraises, BB folds, utg calls, i call. flop J96 with two diamonds. SB leads, utg folds.

how do i play from now on? calling down seems spewing, but he may also just have overcards in which case i'm ahead.