I also need a thin pillow, I have had this bluewave pillow for a while and it's still just as good as it was new. They make it in various thicknesses so you can get exactly what height you need.
Bluewave Bedding Ultra Slim Gel Memory Foam Pillow for Stomach and Back Sleepers - Thin and Flat Therapeutic Design for Spinal Alignment, Better Breathing and Enhanced Sleeping (Standard Size) on Amazon works well for me. But I like very thin pillows.
I have issues with pillows that are too thick or fluffy. When I started getting migraines, all pillows felt awful. My search for a thin, comfortable, neck supporting pillow lead me to this one:
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I have the "Ultra Thin" and I love it. After looking up which one I had, I started to worry about what I'd do if it wasn't still for sale, so I ordered a back up. Good luck in your search!
I'm in the same boat. Was thinking about getting this one for myself.