That aces hand you do realise he had 17 outs, don't you?

I'm afraid I have to repeat what's ben said above. This is very fishy play and you need to go back to basics and start again. You are playing bad cards before the flop, seemingly at random, and you are making all-in raises in spots where you're only likely to be beaten by better hands. The K2 hand was unlucky after the flop but you shouldn't have been in that position anyway.

Start with the beginner's circle sticky threads and proceed from there. If your immediate reaction to this thread is "screw you arrogant assholes, I don't need to start from scratch" then I fear your poker career will be short and unhappy.