what do i do here?

[smittyuiop]

What's the buy in? Anyway I would do either of a few different things based on stacks and reads. Betting 700 or 800 will get a better hand to call and worse hand to fold, which sounds ugly but on the other hand it gives you the information you want to know for cheap so you can give it up easily. If you check then you'll have to reevaluate. If MP bets and BB calls then obv give it up, if MP bets around half pot or a little over and BB folds you could call and try to get a read on the turn. From raising that big UTG they know you either have TT+ or AQ+ most likely, and check calling makes your hand look a lot like underpair. I'd either lead out and then give it up or check fold. Sucks but you really don't want to play big pot here.