Ciara — who's pregnant and in her 3rd trimester — was involved in a car crash in L.A. moments ago … TMZ has learned.
Witnesses tell us Ciara was driving a white Mercedes SUV and was making a left turn when a grey Volvo SUV slammed into the front passenger side of the vehicle.
Police and Fire Dept. responded to the scene.
We're told Ciara was clutching her chest and shoulder — but was walking around and talking on her phone.
Story developing …