I feel like my boyfriend doesn't appreciate me, how do i tell and how do i change it?

I've been with my boyfriend for 5 months and it's been very intense. We see each other very regularly at least 5 times a week. we are both in our 30's and not into playing games. but the problem for me is in the beg he was all over me, in an emotional sense. he couldn't wait to be around me, would text and call me and want to spend every waking minute. that obviously couldn't continue at that intensity but as that has changed we have sort of gone into this lull. i put alot of energy into making him feel special and always try to take care of him but if he gets up to get a beer he just sits back down, when i come over he doesn't even get off the couch just sort of nods his head and when i leave he waves bye while still staring at the tv....he's been struggling with work alot lately and i really try to be patient with his moods and let him vent but when i'm having a rough day, he says i'm sensing a vibe from you, you're all negative and he shuts down. i know that sounds silly but it's all these little things that make me think he thinks more about himself than he does me and i don't think that is right. he doesn't like to talk about relationship stuff so i have to make sure it's really worth it before i bring stuff up ~ hes' very drama free. i feel like there are ways or things i can do that will bring back my dignity that i feel like i'm loosing and let me know if he really does appreciate me. or am i just letting past bad relationships influence how i'm viewing this one. hope this makes sense.... any incite would be helpful thanks.