Teyana and the director -- Jean-Claude La Marre -- were filming "Gang of Roses 2" last weekend outside L.A. ... when Teyana asked to be taken home because the pain was just too much to bear.
According to 20-year-old Teyana, she asked multiple times to be taken home by car service -- and when La Marre continually refused to allow that ... she got in his face and started shouting. Teyana claims La Marre shouted back, "Don't f**king scream at me bitch" ... and pushed her in the face, hitting her aching tooth.
La Marre claims he only defended himself ... AFTER Teyana "jumped on me and began swinging" -- but says he never hit her.
Whoever started it ... we're told several crew members had to separate them. Teyana says during the scrap her shirt was torn open (above), she got popped in the nose and mouth -- and the blood ended up on her denim shorts.
Teyana's people say they are considering legal action. La Marre says the only reason he didn't file charges is because "she's 20 years old and I'm 40 ... kids lash out."
By the way, La Marre is finishing the movie -- a western also starring Amber Rose and Claudia Jordan -- but with a twist. He's killed off Teyana's character.
In the words of the immortal Rick James ... "Cold blooded."
As TMZ first reported, Teyana allegedly flipped out at an L.A. recording studio over a comment a woman made about Chris Brown -- a close friend of Teyana's.
We're told Teyana punched the woman multiple times and then kicked her in the head and stomach once she fell to the ground.
But law enforcement sources tell us T.T. claimed self-defense -- and there wasn't enough evidence or witness testimony to prove otherwise ... so she skates.
Law enforcement sources tell us ... Taylor was hanging out at a recording studio in Burbank Saturday night when another woman made a comment regarding Teyana's friend Chris Brown.
We're told Teyana allegedly flipped out -- and punched the other woman in the face multiple times ... sending the woman crashing to the floor ... where Teyana proceeded to kick her in the stomach and head with her boots.
Cops were called to the scene ... but Teyana had already left the building.
We're told the victim sustained several nasty scrapes and swelling around her face.
Police sources tell us they're investigating the incident -- and would like to speak with Taylor ASAP -- but so far, no charges have been filed against her.
Attempts to reach Teyana were unsuccessful.
UPDATE 4:03 PM: Teyana finally commented on the situation on her Twitter page -- saying she's "being accused of something i didnt do."