While you can try to contest your statements (i.e. have them excluded) on the grounds that you were not mentally competent at the time and therefore could not consent/waive counsel, this will most likely not work. Courts have held that an alleged lack of capacity owing to voluntary intoxication (e.g. getting drunk) and its consequences (e.g. getting a concussion due to being drunk) is not legally a lack of capacity--that is, you are still held accountabled to your actions, including any statements made, waivers or rights, etc. Courts have held this because otherwise, it would be an implicit invitation to people to imbide in order to then escape the consequences of their actions.