Advice please

So my boyfriend and I have told eachother I love you and we talk about marriage an children all the time. I've met his whole family but he barely knows mine due to the fact that he's in the navy. I often feel like I can't believe that he means it when he says he loves me. I don't know what to do. I feel annoying. I know he's busy but sometimes it just feels like he never can make time for me. He didn't even remember why I was having surgery or when. What do I do to bring it up to him? Or what do I do in general?