Hmm...
you get the kick out of wearing gal's undies and you felt guilty
when you did a blow-job for a guy but, now, you yearned to do it
again.
I guess you are in a state of searching for your true identity...
Feeling guilty is normal as you feel that you are a guy and
shouldn't be doing all those things, but, you get the kick out of
it...
Finding a psychologist or shrink will help you identify yourself
better as it seems that you have lost control of yourself, eg.
losing concentrating...
Stop throwing those undies away to curb your desires, coz, you
yourself know that it doesn't work! You actually bought new ones
now...
Decide for yourself if you want to see a psychologist...
Others may see you as a freak, but dun ever give up on
yourself.
You are the best person who knows yourself best. Do as you deem
fit!