I plead guilty to a possession of a controlled substance for sale charge. The substance was not mine but I was represented by an attorney that represented me and a codefendent on the same case. I was never informed that this was a potential conflict of interest. I feel like my rights were violated by this specific lawyer. Is there anyway that I have legal grounds to to withdraw my plea. Plea was taken about 3 months ago.The retainer agreement only speaks about a consent to allow joint representation.. There are no details about pros/cons or disadvantages. It was merely a brief sentence about consent. The court does not have a conflict of interest discussion or anything of that nature on "the record". I was completely unaware i was being deprived of my sixth amendment right.