so frustrated with my 6 month old

I'm so frustrated with my son I could cry. He can seriously never ever be entertained, EVER. I'm so sick of it! He wants nothing to do with his crib, his play chairs, high chair, swing, his TOYS! Nothing entertains him. He fusses if I hold him he fusses if I lay him down to even change his diaper. He won't watch cartoons for longer then 10 minutes. I'm clueless at what to even do anymore. He fusses when I try to rock him when he's tired, just nothing works. (No he isn't sick or it isn't his teeth I'm positive) he can't even be by himself for more then 5 minutes because he gets bored, I ALWAYS have to be doing some extravagant for him to be entertained for maybe 20 minutes. Anybody else? I can get nothing done in the house I can barely eat.