Sexy time?

Well, not so much sexy time. I am so tired and exhausted and just feel so completely unsexy. Too be honest, I think I'm a little nervous about sex at this point. Even though nothing has really physically changed from a week ago, I just feel like I won't be able to satisfy now. It's such a ridiculous thought (I am good, after all ;), but it's been running through my mind this week. It's totally killed my libido. I feel like I should be horny, but I'm not... how odd is that?