I'm going crazy!!!!!!😡😡😡😡

My boyfriend is not answering my calls, my texts.. I don't know what's going on!! The last time we spoke was on Saturday night he went to the bar with his friends he said he would call me later.. He didn't.. Yesterday he didn't say anything to me the entire day so I started calling no answer, texted him no reply even on Facebook.. I don't know what to think! I've been calling him then since and no answer!! I'm getting stressed really upset!!😖😖😖😖😪😪