Makes my neck hurt

I need a new bed pillow and not just any pillow. I need an orthopedic one because I have neck and back issues. I can’t remember where I bought my last one (that’s how I know it is time for a new one). I went to google and did a search. Heck, just the number on Amazon made me dizzy. Not to mention they were different shapes and sizes depending on if your a side or back sleeper. Unless I videotape my sleep, how would I know if I am a side or back sleeper? The first orthopedic pillow I got, the Wal pillow, was for both. I bought it in 1994 at Falk Surgical and the store and the pillow brand are both long gone. Putting aside the way I sleep, how do I know which one is best— memory foam, memory foam fill, or non-down fill. Oh, and do I want the pillow to have a cooling layer of gel on top, have a cover made from bamboo or organic cotton, and be breathable? Like I said dizzying to the point where my neck hurts. In the meantime I will forgo getting a new pillow, and instead, book a session with my chiropractor. And here is a good idea, I’ll ask my chiropractor to recommend a pillow.