Is a pregnancy pillow worth it?

Do you prefer a regular body pillow or pregnancy pillow? I'm almost 22 weeks with my second and I am SO uncomfortable. My back and hips ache all night long. I can't sleep on my sides becuase it aches so bad and sleeping on my back isn't comfortable either. I'm losing so much sleep at night and can hardly stay awake during the day! My husband wants to make sure I'm comfortable and get a good nights sleep. He said he wants to get a pillow. Is a pregnancy pillow worth the money and work? Or does a body pillow work just as good?