A Chicago gynecologist was found guilty Thursday of raping his eight-month pregnant patient while performing an exam on her in his South Side office.

Just a day before, Dr. Bruce Sylvester Smith, 60, took the stand before Cook County Judge Clayton Crane and testified that the victim had made a pass at him and initiated the sexual contact on Aug. 2, 2002.

Smith said the woman guided him in a sex act.

Sensing her actions were an “overture,” Smith said he had consensual sex with her.

But the jury didn’t buy his story. They believed the victim, who reported the incident to police immediately.

Smith wasn’t arrested in the case until 2010, when prosecutors admitted “mistakes were made” when Smith’s DNA sample was never taken after the woman reported the attack.

Smith’s medical license was suspended for nine months in 2009 after several women came forward to accuse him of sexual misconduct.

Smith’s license was revoked on March 29, 2011, for failure to “perform surgical procedures,” according to Susan Hofer, a spokeswoman for the Illinois Department of Financial and Professional Regulation.

Smith was never charged in any other case.