Advice needed

I'm in a long distance relationship , my boyfriend and I have irregular sleep schedules bc we stay up all night til 10am everyday. We are gamers and we usually talk while we are awake and for the past 3 days he won't answer my msgs or FaceTime calls and when he does he says something mean along with he'll call me back. So the first day I'm like okay that's new, the second day I'm just like wtf is going on and the third day I'm thinking I must have done something wrong. Today is the fourth day and I sent him a msg saying that I refuse to keep trying to contact him, I also said clearly you don't want to talk to me and I'm not worth your time. He said he's sorry and that he just needed space. There's already a lot of space and we don't spend every minute we have talking to each other. So I'm thinking there must be someone else. Also we have only been together for about 2 months, I thought it was too early for space. Am I crazy? Am I overreacting? Do I love him and that's why not talking to him has been killing me ? Or should I really be worried?