WYANDOTTE, Mich. - A pregnant woman was arrested after police determined she was driving while high on marijuana and pain medications, officials in Michigan said.

The 31-year-old mother-to-be was pulled over after police noticed her car swerving on the road, detectives said.

During the traffic stop, the officer said he noticed a strong odor of marijuana coming from the car.  The officer also said the woman had red, glassy eyes. She was later determined to be 7-months pregnant, police said.

According to investigators, a K-9 officer recovered a bag of marijuana and paraphernalia from her purse.

Police said the suspect had a hard time balancing and admitted to taking Vicodin that day. The suspect also allegedly told officers she had a prescription for Vicodin and Soma, which are pain medications.

The expecting mother was taken into custody and given a blood test. She was arrested on several charges including driving while intoxicated, child endangerment, possession of marijuana and driving without headlights. 

A man who was in the car with her was not arrested.