Pregnancy Pillow??

How far along were y’all when you got a pregnancy pillow? I’m currently only 7w4d, but lately whenever I wake up the past couple of mornings, my back hurts something awful, and I know it must be due to sleeping as it doesn’t hurt throughout the day, just when I wake up in the morning. So my question is: should I go ahead and get a pregnancy pillow? Or am I not far along enough for one yet?