A Yuba City woman and her ex-boyfriend have been missing for days after they were supposed to return home from a trip but never came back.The Yuba City Police Department said 29-year-old Janette Pantoja and 36-year-old Juan Almanza Zavala headed to Hot August Nights, an annual car show in Reno, but planned to come back that same Saturday. But they never came back.A family member of Pantoja said the last message they received from them was a text Pantoja sent to her boyfriend saying that they were 30 minutes away and would be home soon.Police said they have tried pinging both their phones and the last known location of their phones was in Nevada County, and that the sheriff's office there is now also helping with looking for them. Family said that the last location ping was in Penn Valley, which is roughly 30 minutes away from Yuba City.The two were last seen driving a blue 2002 Ford Explorer with the license plate 4SNS072.The family said they filed a missing persons report with the Yuba City Police Department, and officers told them that Pantoja's last ping on her phone was in Penn Valley in Nevada County, roughly 30 minutes away from Yuba City.KCRA 3 reached out to the police department but has not heard back.Anyone with info is asked to call police at 530-822-4661.