You're probably right that your husband doesn't know what to do with a sober you. That makes it tougher, but not impossible. Have you looked into AA? In addition to helping you stay sober, you will make sober friends that will make you feel less lonely and more involved in life.
You could also look into some volunteer work. With all your education, you might be a real asset to some organization, and it might even lead to full-time work at some point. Just a thought. Believe it or not, sobriety can open up all KINDS of possibilities.