Snoogle + tempur-pedic pillow

😺Jae • 36 in July2015. FTM. Super happily married.
I was just about to buy this when I realized I wouldn't be able to use my tempurpedic pillow. 
Did anybody else have this issue? Did you just not use your tempur-pedic pillow? 
I'm tempted to just buy a body pillow. I already have an extra pillow for btwn my knees. I just want something formed and form to avoid rolling on my back when I sleep.