BabyDad issues

I'm 20 years old and this is my first baby . My boyfriend is 24 and also his first .. I didn't find out I was pregnant till I was 8w3d , so the next day I told him . He didn't believe me so I showed him ultrasound pictures . I'm now 14w1d today and he just don't seem happy .. He won't even look at our ultrasound pictures , listen to the heartbeat , hasn't even went to a Dr appointment .. Our friends has a kid and she thinks its weird he doesn't really seem interested . He won't even let me really talk about the baby .. Its upsetting because I didn't even want children and its like I cant at least enjoy my pregnancy , I already feel like a terrible person because I haven't enjoyed it really yet .. I don't know what to do anymore . Its so complicated .