My cat has been acting sort of antisocial lately and hiding under the bed a lot lately which is out of character for him since hes usually active and social. He usually sleeps against me on the bed and the Last couple of nights he’s been sleeping at the foot of the bed which is odd. During the day he hides and sleeps under the bed instead of sleeping on his chair on tree bed where he usually does which is unusual. Nothing has changed in his diet or anything different in terms of that, the only changes lately are the weather has been hot but i have the AC running and my schedule has changed so im away from home at different unusual times. Should i be concerned?