HE IS IGNORING ME! please help me?

my boyfriend and i have been seeing eachother almost 2 months now and i know thats not long, he was my bestfriend for 2 years before and we got together after me and my ex broke up, but he has always been reliable and replied to me promptly! but the last couple of days he just hasn't he has kind of been avoiding me, he said something really meaningful to me then i didn't know what to say and since then iv been trying to get hold of him but he kindof only replys once a day and i know he has credit! and if he lost his phone he doesn't answer at home, of on myspace and i know he has gone on that.. please help me what should i do?