R. Kelly Feels No 'Relief' After Catching Break in Chicago Sex ...

R. Kelly is no longer facing sex-abuse charges in Chicago, where a prosecutor's decided to drop several pending charges, but that news isn't swinging his mood ... the singer still has plenty of other troubles.

Kelly's attorney, Jennifer Bonjean, tells us she spoke with Kelly after Cook County State’s Attorney Kim Foxx announced she no longer would pursue the case because the disgraced R&B star has already been convicted in 2 federal courts of similar crimes and "is looking at the possibility of never walking out of prison again."

Bonjean tells TMZ, “There is no real sense of relief. He is still fighting for his life. He is facing decades in prison." But, she added that Foxx made "the right move" with her decision.

Foxx held a presser Monday to make the announcement, acknowledging that some of the accusers may be disappointed, but "we believe justice has been served."

As we reported ... Kelly was accused of sexually abusing 4 people, 3 of whom were minors, in the Chicago case. Foxx says she will ask the judge Tuesday to dismiss the charges against Kelly.

Kelly has already been convicted by federal courts in New York and Illinois with a smorgasbord of federal crimes, including child pornography, enticement, racketeering and sex trafficking. He was sentenced to 30 years in the NY case and could get anywhere between 10 to 90 years in the Illinois case when he's sentenced in February.