Hi there IN33dSI133p,
Sorry to read you are having issues when you sleep. As a side sleeper you need to be certain you have the correct pillow, with the appropriate loft and firmness. Here is a link to my pillow thread, there is a lot of information there.
Some of the pillows that might offer you the type of relief you need. Oxygen Pillow, CozyPure Noodle Pillow, the higher loft (sized for you) Malouf Dough PIllow, a wool pillow with a latex core, or a very spring bolus wool pillow.
The Oxygen-Pillow from @EuropeanSleep works needs to be fitted to you based on a variety of factors. The Cozypure, has removable fill, I suggest ordering an extra bag of fill just in case you need it (I did). The Malouf Dough is a solid latex alternative pillow, and the wool pillows available at @ONFM, they also have some lofty cotton pillows too.
One of the key points is the placement of the pillow. You want to be certain the pillow is tucked under your neck and pressed up against your shoulders, so you neck is fully supported. Think of a pillow as a mattress for your head. It provides support and comfort and conforms to the curves of the head, neck and upper shoulders.
All the best,
Maverick