Former WWE star Kharma tells TMZ ... she fell into a deep depression after suffering a miscarriage last year ... and put on so much weight, she fell out of wrestling shape.

But now, Kharma says ... she's finally broken out of her funk and is on a renewed mission to shed the fat so she can get back in the ring.

We broke the story ... Kharma's baby died before she was able to give birth on December 31. Kharma says she had put on a lot of weight during the pregnancy and believes the extra pounds caused her health to suffer and may have contributed to the miscarriage.

In the months that followed, Kharma became depressed, put on even more weight and was dropped by the WWE.

But in the past couple of weeks, with the help of some friends, Kharma motivated herself to get back into fighting shape ... and has vowed to reclaim her career.

We're told she's already recruited a team of fitness experts and therapists ... and plans to document the transformation in the hopes of scoring a reality show. In fact, sources tell us ... Kharma has already been in touch with multiple production companies.