I bought this pillow for knee pain. I'm a side sleeper and knee on knee became excruciating as of late. Of course my X-Rays show why. I just tried taking a nap and after maybe two minutes I couldn't take the pain. This pillow is rock hard and no matter how many ways I moved my legs on the pillow, the pillow made the pain much worse. I don't know if it would be comfy for a pregnant lady either but I rent to a woman who is pregnant so I'm going to give it to her to try out. I don't know what I'm going to do. I seem to have struck out on on-line sites when it comes to a pillow for my chronic knee pain.