I especially liked this article
Sexual Guilt Your husband needs a new sexual mindset, he needs an education, if he is willing, start reading secular books on sexuality.
I came a long way from sexual guilt to total freedom, it all starts in the mind, of coarse our hormones are a big help.
How old are you both? I used to be revolted by the thought of oral sex, husband used to want to do it, I would push him away, I had no desire to go down on him, NOW I love it, can't get enough. We can change if their is a will and desire, recognizing these things that are binding our minds and letting go of wrong beliefs & thinking.
A sex therapist could be a big help in these areas, if you can not afford, try something like this -
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Excellent book for newlywed Christians -
Amazon.com: Sheet Music: Uncovering the Secrets of Sexual Intimacy in Marriage (9782913356559): Kevin Leman: Books Amazon.com: Complete Idiot's Guide to Tantric Sex (0021898641755): Dr. Judy Kuriansky: Books (per Scanner's advice)
Here is a book about changing our THOUGHTS to change our MOODS and ultimately our LIVES, probably much of what a Therapist does! (nothing to do about sex though)
Amazon.com: Mind Over Mood: Change How You Feel by Changing the Way You Think (9780898621280): Dennis Greenberger, Christine Padesky: Books 