Almost had a stack

I was up early and often today.  It was my 15th winning session in a row.  Pretty sick but this game is also easy for me to crush.  I had a stack of about $550 after I rivered the nut flush.  I had As 4d on SB and limped.  The flop was Ks Js Qs.  Pretty sick.  I bet out ten and the guy next to me moved in for $40.  Two people call and so do I.  Turn is red and the river is the 5s.  Good hand there.  I bet the river and got called by the 10s.

I find 67d in late position and limp.  The BB is on his 3rd hand.  The flop comes 8910.  BB checks and a guy in early position bets.  I raise and get a call from the guy to my left.  Let's call him donkey.  The BB makes it $100.  First bettor folds.  I move in and donkey folds.  The BB calls. He's got the nuts.  That sucks.  I lost $200 on that hand.  I still left up.  Just not up up up.