boyfriend hasn't responded to my texts in 11 hours but replied to my social media in 2 minutes, would you be upset?

My boyfriend isn't working today, I know that. We've been together 4 months. Right now we're in a bit of a rough patch but today has me worried that it's more than that.... He hasn't answered my text (It was something simple to reply to) in 11 hours. But I tagged him on a facebook video and he replied to that in 2 minutes? I'm really upset right now, I don't understand why you wouldn't text your girlfriend for 11 hours but be on social media. Or am i just crazy???

EDIT: He is out of town, on a road trip. I don't see any reason why he wouldn't be able to reply. He has cell service, if he was busy as some of you say, why would he be on facebook? For those of you telling me to chill... he's stopped telling me he loves me and we're in a rough patch, of course I'm worried.