A Yucca Valley man was arrested Tuesday, accused of beating up his pregnant girlfriend. According to a Sheriff’s report, Jeremy Magness, 19, and his 15-year-old girlfriend had been drinking at a party Monday night. After they left the party, they started arguing near Hanford Avenue and Yucca Trail in Yucca Valley, and Magness punched his girlfriend in the stomach, and also kneed her in her stomach. The girl told deputies she thought she was a few weeks pregnant. The girl went to Hi-Desert Medical Center for treatment of the pain. Jeremy Magness was arrested for investigation of statutory rape, assault with a deadly weapon, and felony spouse abuse. He was booked at West Valley Detention Center with his bail set at $50,000.