Need some advice...

So my boyfriend was horny last night when he got home from work. I wasn’t even feeling sexual, far from it. But when I told him no because I’m on my period, he insisted with anal. When I told him no to anal because I’ve been constipated lately, he persisted with oral. It’s not that I don’t love him, I just wasn’t feeling up for any sexual contact. But he kept at it so I just gave him head and then let him do anal. So this has happened before and my body seems to just go numb through the actual sex. When he finished he sighed in frustration and started complaining how I don’t ever please him, how boring I am. I’ve grown used to his comments so it’s whatever. But I felt so dirty and used so I showered but I always end up with the feeling of being abused. Is it bad that I can’t fight back because it makes me feel guilty, like I’m holding out on him? I mean, when the role is reversed I understand. I mean I might REALLY want to have sex with him but if he’s not up for it, I understand.

Would it be considered rape? I think he feels like I owe him sex or that it’s my sole responsibility in this relationship, to always be available for sex. I mean, I say no. He persists. I say no and add the reason to it. He persists. By this time, I know he wants it pretty bad and if I keep saying no he’ll just end up mad af, so I just lay out on the bed and tell him to get it over with. He goes ahead and then ends up getting mad at me because my body doesn’t react as he’d like. Ugh, I can’t win. And I end up feeling less every time this happens.