OMG, I let the cat in and I cannot find it.!!!!!

If a cat does not want to be found it won't be even in a studio apartment!My cat disappeared at bedtime tonight only to reappear in the middle of the night on the top of my husband in bed.He has NEVER DONE THIS BEFORE !I think he is trying to tell us something.....he generally is sgut in his room every night but will not go tonight!Where are you OP?I am in Omaha.