gurl yaaaaas i'm so glad you asked that question! recently i bought a pregnancy pillow (i'm not pregnant, just a side sleeper like you) and it's been such a game changer! i no longer sleep with regular rectangular pillows, because this one is all i need. you can get all sorts of options off amazon, and while it can be pricey, my pillow was worth every penny. but i lucked out and was able to get a used pillow off amazon for $35. a pregnancy pillow is also good for breast-feeding women, disabled/elderly people who need to be propped up, and for those who feel lonely because lying with a pregnancy pillow is like being embraced while you sleep.

also, idk how this happened, but when i sleep on my back with this pillow, i don't get sleep paralysis any more.