Ludacris Ex Tamika Says He's Too Fertile for His Own Good

3/22/2015 12:30 AM PDT

Ludacris -- Ex Tamika Fuller Says He's Too Fertile for His Own Good

EXCLUSIVE

Ludacris' baby mama is not going down without a fight ... she claims he railroaded her in their custody battle by keeping BIG secrets from the judge. 

As we reported, Tamika Fuller lost custody of their 1-year-old daughter back in January. She now claims in legal docs she deserves a second bite of the apple because Luda didn't tell hizzoner his new wife is pregnant and he's such a bad parent he's getting a nanny to do the heavy lifting. 

It's a hard argument to make ... that a guy who hires a nanny is a bad parent, but she's trying.