He's gone MIA in days and I don't know what to do?

My "friend" has been away for days without telling me. Everything was perfectly fine between us and nothing was wrong at all but up until he packed his bags to go back from Cali he hasn't texted me at all. When I tried sending a message to him on Kik it stayed on s and did not change for days. And when I tried messaging him on Skype he's shown as away and I'm his only contact on there. I don't know if he dosent want to talk to me anymore or if something is wrong with his phone.. What should I do?
He's gone MIA in days and I don't know what to do?
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