Can you calm me down a bit?... Or SHOULD I be upset here?

Well I have admittedly had an extremely stressful month with the holidays and my job. My new boyfriend went out of state for Christmas with his family. We spent all of Christmas Eve together, and then he texted me Christmas morning to wish me a Merry Christmas. Then I didn't hear from him again all day. Then today I texted him to wish him a happy 1 month anniversary(I meant it as a joke, he said the same to me after one week) and got no response. That was 6 hours ago. I haven't heard from him now for almost two days, and it's sort of pissing me off. He hasn't really made any effort to contact me at all. I'm not needy at ALL, in fact I'm usually very laid back about these things, but this time I have lost my patience. I want to feel cared about, and he's just ignoring me. It feels really crappy. Should I be upset here?