For the last couple of weeks my poker curve has turned down hill and today when I summed up my hands in Poker Tracker, I found a red number telling me I'm now 13$ down for the last 8000 hands. I play 0.25/0.5$ NL 10 players, usually two tables at a time. My bank roll is now about 1100$ and my max has been about 1450$.

It seems like suddenly I can't take home the small but steady profit I was doing earlier. I feel like loosing more strong hands than before and at some tables it seems like the table is cursed or something. Like today when I lost with AA twice, KK once and QQ three times () in a short while. Also AK and AQ hitting top pair on flop was busted by sets three times. Myself I got a set only once when I flopped my third ace, but then everyone folded, due to my preflop aggression... All these great hands comming my way and all the time busted Only good thing was the practice I got from folding strong hands, something I really need to learn. I even laid down pocket QQ with no overcards on the flop or turn to an obvious KK/AA. A couple of the sets I didn't see coming though, so my loss was significant.

I have been trying to be more aggressive and maybe this has turned my game negative? I am now at an average of 5% PFR and more aggresion than that just cause me too loose more money, because people call anyway. It doesn't fit my style to be too aggressive. I have in fact reduce my River aggression from about 7-8 to 4-5 and I feel that I am learning all the time, but still I loose more big pots than I take down at the moment.

I have learned that bluffing a flop I didn't hit is really a bad idea 90% of the time and will try to stick to betting when I hold something at least. I handle bad beat at the table well, saying "nh" or nothing, refilling and playing on like before. But I feel like I'm out of luck or something. Shouldn't the margins turn my way when I keep playing ok? Sure, I make plenty of mistakes (just see some of my posted hands on this forum), but at an average I'm still playing all right I would say. PT rates me as semi loose-passive/aggressive (default bomb symbol) and that has been my ranking for all my 18000 hands so far.

I play from 15 to 30% of my starting hands, depending on the table and the cards.

My question:
What do you think is the major flaw in my game? What should I try to improve first?
Is it really necessary to be more aggressive than 5% PFR to play with profit?
Should I maybe change to play tournaments for a while?
Any advice would be welcome.