WWE Diva Kharma -- I Dropped a Few Pounds ... Out of My Uterus

Everybody relax ... WWE diva Kharma did NOT wrestle pregnant Sunday night at Royal Rumble 2012 -- TMZ has learned, she gave birth to her baby a few weeks ago ... and she's already back in ass-kicking shape.

Kharma -- real name Kia Stevens -- announced her pregnancy 8 months ago before going on maternity leave from the wrestling company.

There had been no mention of the wrestler since -- so when Kharma made her surprise return Sunday night, there was some speculation she was still knocked up when she entered the ring.

Others thought there might have been some complication with her pregnancy because she only made the announcement 8 months ago ... a month less than it takes to hatch a kid.

But all is well -- sources close to the wrestler tell us, Kharma gave birth to a healthy baby boy named Jamie on December 31st.