What should I do?

Hi. I'm sixteen and me and my boyfriend have been going out for 4 months. He was my first and the only guy that I have had sex with and I have had one pregnancy scare. I need help because we have been having a lot of problems lately and I feel like he's pushing me away but he says that he's been real busy lately. When I'm with him I feel like he's trying to turn me into his exs and that I'm in completion with his past girlfriends. I like him a lot but now I feel like I'm losing feelings but I don't want him to go. What should do? Should I talk to him? I need some advice. So anything will be very much appreciated.