I haven't heard from him for hours, should I worry?

Ive been texting a new guy and he's showed mostly interest and always answers my texts but he hasn't for five hours... going on six. Should I be worried he's lost interest or ignored me? How long should I wait till I know he's blowing me off?
Updates
+1 y
Should I just text him tonight asking him "how was your day sir?' .. Cause what I sent him before wasn't really askng him anything I just said something silly so should I text him that or would that be clingy?
I haven't heard from him for hours, should I worry?
Post Opinion