SidePillow by Tempur-Pedic Here are some good cervical pillows to consider for a side sleeper.
The ComfortPillow by Tempur-Pedic, 23.5 X 17.6 X 6.5 inch Standard This one is designed for a side sleeper.
Iso-Cool Memory Foam Pillow, Gusseted Side Sleeper ,Standard Nice support without the odd shape.
Mediflow Fiber: The First & Original Water Pillow, clinically Proven to Reduce Neck Pain & Improve Sleep. Therapeutic, Ideal for People Looking for Proper Neck Support This is a good one if you sleep hot.