i was playing 1 2 no limit live. I had been playing tight for about 2 hours doubling my stack up. I decided to open up a bit as the other players saw i was only playing top 20 hands so i have 67 suited on the button on a pretty conservative table i raise to 11 and i get one caller. the board comes j27 and i get middle pair and a flush draw. the caller bets 20 and i smooth call. the turn comes 7 giving me three of a kind. the other player bets 40 and i come over the top and she snap calls and flips jacks over. river was a dud. did i play the hand wrong or was it just a bad spot to open up?

how did i play it wrong was i too aggresive

This is a classic example of how suited connectors/rags can get you into some serious trouble. I don't think you played the hand to bad, but it was some really bad timing, obviously. You made a pretty big raise preflop. I would have probably made it 7 preflop instead of 11. Then he might have reraised preflop and you can lay it down, or at least have a better idea of what he might be holding.

Also, you should always stick to your game. Don't open up and do something you might regret just becasue you think you need to appear more aggressive to the other players. Play your game and stick to what you know best. Poker is a grind, so keep at it, live, and learn.

Y'all might lambast me on this one here, and possibly rightfully so; it's been a few years since I've played consistently so the play's got a bit of rust on the ridges but...
I wouldn't say that changing gears is bad. But yes, both, with a bit of bad luck.

In a 1-2 game, you'd have to figure that she had something decent to start with if he called 5.5x blind. High connectors or a pair. Especially seeing that the table you described was conservative. (Unless she has a history of BS, bad play, and/or unconventionality) After the flop, she led and raised hard (10x). Pot odds aren't pretty in this scenario for the flush, but math doesn't rule NL, no? (Plus, two-handed, pot odds generally suck.) Still, you can probably rule out KK or AA since you weren't re-raised pre-flop. Since you raised, there's a chance that you might have those cards, or something strong. A jack is a possibility, is something she might've considered had she had weaker cards. She still led out virtually betting the pot, if I remember correctly. Once the turn comes, she bets pot again. It's tempting with your trips, but you definitely had to think something was up with her hand. Since she initially called, there was valid chance she had pockets to start and since she led in with the raise (ish), there was the possibility she hit. Since it was a live game, did she give off any tells? Also, there was the outside chance she hit trips too with a higher kicker.

I'm an advocate of switching gears on the felt like switching hands behind the desk (Imagine my wicked smiley here), but you definitely have to know how to align your gears with those at whatever table your at. Plus, small suited connectors are (again, my poker knowledge is a bit rusted here so if more theory's been generated since I've left, please excuse me my ignorance here) generally a hand you get it for cheapish (a slight raise at best in a large game) and cash in on when you hit your desired hand (which'd be the nut straight) [btw, how big was the table?]

In most circumstances, I'd agree with you, but OP did note that the table was a conservative one. I interpret that as mild pre-flop raises, better quality hands wrt betting, etc.

lol what is going on in here

pre is big but i'm assuming there was 1 or 2 limpers and that makes it fine

raise flop with pair and fd, turn is a no brainer