I have a maternity pillow on one side and a normal pillow on the other side and although I still get uncomfortable, the addition of the two pillows has made a difference to my sleep.

My maternity pillow is moon shaped and about a meter or so long. I put one end between my legs and the other bit has a mini-moon pillow sewn into it for my bump to rest on. I always have this one on my left as that's the recommended sleeping position while pregnant. I have a normal pillow (long ways) shoved under my back and butt so if I roll in my sleep, I'm not lying flat on my back. I find it much easier when I roll over now too as I have a pillow to pop between my legs and under my belly on either side. Much easier than taking my big maternity pillow with me each time I roll over (which happens a lot due to aching hips!!)

A couple of normal pillows should do the trick but I do love my maternity pillow and it can double as a breastfeeding pillow too.