I feel bad that I’m not in the mood

For the past week I have not been in the mood at. all. My boyfriend complained because I keep telling him no but I just don’t wanna do it 🙄 he’s not pressuring me or anything but for some reason I feel like I have to. Although he does seem annoyed when I say no. I’m going over his house tonight and I know he’s gonna ask again, but I’m still not feeling it. What should I do?