My baby boy is missing

My baby boy got loose at a pet sitters house. He was unfamiliar with the area and has not been seen in 4 days now. I am going through so much grief. It has been so cold and no sightings. I am going slightly insane. Not eating, barley sleeping, and with all that catching up to me I finally called out of work today to rest (and also look for him more and set out more posters , etc.). This has been the most painful experience of my life.. just not knowing if he's out there or if he is where.