not sure how this works??

Hey guys. I'm new to this but I need some advice. 
I am 24 had only been with one guy until last week, and he had said all the right things to get me to feel safe. We ended up having sex, after I had met his family and his friends on our second date... however since then he has been distant. He has told me about five times that he isn't pushing me away as he has a lot of issues with family, but to me it feels that way... I have tried to talk to him today but no response. Has anyone else felt this way? And how do you deal with it, because I really like the guy and I thought it was mutual? Until the last few days. I'm sorry if I sound pathetic!