My Dp woke me up at 8 to say Ds 14 had done for a walk with his skateboard at 6 and not come home. He's still not home and his phone is off. We live rurally so not many places he can go. Dp has been driving around but no sign of him. I've phoned one of his friends that I have a number for but no answer. None of his friends live close by and I don't know exactly where they live. He took an overdose a few months ago but seemed to be in a better place lately. He's been having trouble sleeping and he text me at 3am so I don't think he slept last night either. I'm so worried what do I do?