Urvi Adjustable memory foam pillow, medium firm with 3 layers of removable pillows for height adjustment

I'd give this 3.5 stars if I could. I'm a side sleeper and had a whiplash injury 15 years ago and haven't found a comfortable pillow since. This one felt great for about 2 weeks when I used the thickest layer combined with a thin down pillow from a different 3-layer pillow I own, but now my neck is hurting a lot in the morning again so I guess this pillow isn't going to work either. I like the adjustable layers and the firmness is great--enough to be supportive but soft enough to not make the side of my face hurt which is often an issue I have with pillows. But why isn't this pillow FLAT instead of contoured? With a contoured pillow like this, you have to put your head in the exact center of the pillow or your head can't be level because the curve of the pillow makes your head tilt slightly, which is not helpful with neck problems. Since it's apparently impossible for me to find a comfortable pillow, I'll keep trying different combinations of this one's layers with folded up towels and whatever else I can come up with to try to get the right pillow height, or maybe I'll cut some of the foam off the middle to try to make the pillow flat.