Going down

Since I have no one to talk to about this ima come on here, ima admit sometimes I don’t wanna go down on my man..don’t get me wrong I do enjoy it but I mean we’ve all been there ladies or gents sometimes we just don’t wanna you know ? And I feel like he gets upset or mad at me because he’d be giving me the cold shoulder if I said no I’m not feeling good he’d just ignore me turn his back to me and everything while we’re laying in bed and once I do it it’s like he was never mad at me and it just makes me feel bad like I don’t wanna feel like I’m just an object to him because I would think I’m not we’ve been together for 3years now and it just doesn’t sit right with me why would you act this way all because I don’t feel like going down on you? Am I in the wrong ??