online last night

So, I am playing a sit and go online last night. I have about 2,000 with the blinds at 40 and 80 the player under the gun makes a raise to 160 and the player in the 2 spot calls I am allso in erly posistoin in the 3 spot I have the 8h 7h I make the call because I love suited conecting card and because I think if one of these two player have a big hand I could crack it and win a big pot(double up). all other player fold round to the big blind who calls. The pot in now 680 and four players are seeing the flop I have posistion on them all. The flop comes 7d 10s Jh it gives me a gut shot straight draw a piar of sevens and a back door flush draw. The big blind checks and the player under the gun bets 80 into a pot of 680 the player in the 2 spot raises to 160 and I call thinking maybe I can get lucky and hit a 7 or a 9 on the turn and win a big pot. The Big blind folds and the player under the gun calls. The turn comes 7c and gives me trip sevens.(gin baby) The player under the gun now go's all in and he has me covered and the 2 spot folds. Ok the bord looks like this 7d 10s Jh 7c there are about three hands that I am woried about jacks tens or the 9 8 suited. But because I hit my hand and this player is under the gun I could be up against an over pair like AA KK QQ or maybe AJ so i make the call for all my chips. Player shows AJ (As Jc) for two pair jacks and sevens I am an 95% to win with one card to come, but you can guss what the river was. A Jack!