My boyfriend of 6 months (early days) is on holiday in Spain with his friends, he's been there for 4 days now and is there another 3 days. We are 25. I've heard of him everyday since he's gone and we've had phone calls.(he asked for them) but I didnt hear off him all day yesterday. I said him a message yesterday saying good morning and to have a lovely day. He saw it but never replied but posted on instagram. And, with the joys of technology, I saw he was online on and throughout the day. I didnt think anything of if really though and didnt send any messages but went to bed. Woke up this morning and still no message despite him being active about an hour before i woke up.
So I sent a message saying "is everything okay"
And he replied saying "of course, why wouldnt it be?"
And then sent another saying "i did try and get in touch with you yesterday (and a kissing face) xxxxx"
So i replied back (as a joke)
"Just checking you were still alive (laughing face) and glad your having a good time!"
But now I feel so stupid!! I havent been messaging him loads during his holiday, i only message as a reply when he messages me. But I just wish i never sent that message now and i'm cringing at my "just checking your still alive" message 
i thought it was jokey at the time but now i've read it back, i'm worried he'll take it the wrong way!
I have so much anxiety right now :(