Well, I think the number one thing is to want to be sexual for selfish reasons. Think about the times when your sexuality really made you feel good about your self - wouldn't it feel good to have that back? You have to 'own' this.
What you should do in the short term is be really open with him about wanting to get back in touch with your sexuality. Make sure he knows why you are going to the doctor, and make sure you let him know about other things you do, too. Trying counts for a LOT.
I don't feel attracted to him. I love him and I want to change that.
Other posters have harped on this a bit, but I'm going to say - if you have a chronic fatigue problem of some kind, it is no surprise that you don't feel attracted to him.
Here are some ideas for getting in touch with your sexual side....
Masturbate. Explain to your husband that you aren't masturbating as a substitute for having sex with him, you are doing it to get back in touch with your body, sexually. A lot of women find that a vibrator makes it really easy and quick to get off. Buy a small 'bullet' vibrator, and if that doesn't feel like enough, try something a little stronger, like a Hitachi Magic Wand.
Everyday when you get out of the shower, touch all of your body. Ideally even spend 10 or 15 minutes meditating nude or doing yoga nude - whatever might give you a bit of a sexy feeling about your body.
Expose yourself to erotic things. Images, fiction, buy a sexy bra and pantie set to wear once in a while.
Lastly, take some time to talk to your husband about what you need in terms of foreplay. Tell him that you recognize that he does work like that (go straight for the dick) but that you do not work like that. Ask him to agree to a no-sex month, but during that month there will be lots of touching and talking about what feels good and turns each of you on and what doesn't.
Also during the sex-free month, talk about sex for an hour twice a week. Talk about your first orgasms, the first time you masturbated, your first crush, what an orgasm feels like to you and him. Even better, tell him what if feels like as you get turned on, and the difference in how you feel when you are ready for him to touch your clit compared to when you are not.
I hope some of these are helpful suggestions!