Dr. Murray's Baby Mama : Says Maximum Sentence Is Ridiculous!!!

Dr. Conrad Murray's baby mama Nicole Alvarez is furious over the maximum sentence that was imposed today -- claiming Judge Pastor's decision was "ridiculous."

Nicole stepped out today with her son -- insisting Murray has beaten himself up non-stop since Michael's death ... despite Judge Pastor's claim the doctor showed no remorse for his crime.

Nicole adds, Murray has been "mournful for the past two-and-a-half years."