Its best to look at it like you took a break between drinks...if you have done tangable work in a program of recovery over the last 3 months to effect a drastic personality change which will mean you will recover from alcoholism (thats a mouthful!) then i would say speed the process up as you may have been dragging your feet a bit (in AA work through the steps straight away with a sponsor in order to effect a spiritual awakening)...
I drank again many times before getting into recovery, staying dry from 3 months to a year...i always looked for people that were staying dry without any form of effort of inner change whatsoever and it didn't work for me...i had to go to AA in the end...
The feelings of guilt and being scum etc are self pity obviously, maybe when you snap out of it again, which you will, go and get some help?