Oh Yumi you must be so worried.   My  cat used to go missing at times, even for a couple of days, and I would get frantic until he turned up again.  Has he got a phone no on him?  

 

Once when my cat  went missing for a while I got a phone call from the neighbours in the flats next door and he'd  gone up their stairs and was found shivering in a top corner, scared to come down.  I do hope Dini comes home soon.   .