Pokerstars or Just my luck?

Ok for starters A few weeks ago i was making at least 300$ aday playing on doyles room. I was making great plays and getting great hands. I was so hot. this week i have been playing at pokerstars and this is one of my favorite sits. but for somereason i cannot get my bankroll up if my life depends on it. I have lost over 500$ easy. NO matter how good of a hand i get i will lose to a suck out. In a tourney that was a 10$ buy in. I was down to the last 100 people and was already in the money but wanted to make top 10. anyways . I got pocket aces and the blinds are like 2k the whole table calls and the guy right before me goes all in . i call instantly everyone folds i called there is over 100k in the pot the fucing guys shows 7 4 offsuit and flopps a fucking stright this is the biggest fucking bullshit hand and or call raise whatever u want to call it . I was so pissed off and if i was at a live game i woudl of smashed this guys head in