Pregnant pop star Samantha Mumba has been involved in a horrific three-car pile-up a week before she is due to give birth.

The Gotta Tell You hitmaker, who is 37 weeks pregnant with a girl, posted a picture online that she took while lying on a gurney on the side of a freeway in Los Angeles on Monday (09Feb15).

Two emergency response vehicles can be seen in the snap in front of a swarm of other cars and several men in high-visibility waistcoats.

The Irish singer-turned-actress added on, "So yesterday was a bad day. 3 car crash that we got the brunt of. My poor car written off a week before the baby is due. Clearly God was protecting us... just so grateful that our little girl is ok and this wasn't any worse. Serious reality check."

It is not known if Mumba was injured in the crash or if she was taken to a hospital for treatment.

Mumba, who lives in Los Angeles, is expecting her first child with husband Torray Scales. The pair married in 2012.