Bad play? Or bad luck?

[bigjared]

The last 3 days I have lost everything I won the past few weeks and then some on 5 big hands.

http://www.pokerhand.org/?1493410
http://www.pokerhand.org/?1493412
http://www.pokerhand.org/?1493413
http://www.pokerhand.org/?1493416
http://www.pokerhand.org/?1493418

I feel shell shocked, and am in disbelief... I understand bad beats happen, but they have been so frequent, and with so few winning hands in between. The big problem I am having is that I did not get my money in good on 3 out of the 5, but I seriously don't know how I can avoid it. Maybe someone can walk me through the hands and point out my mistakes.

-Jared