I didn't get mine until later-- and wow, I wished I'd had it right from the start. I'd bring it to the hospital for sure. Until I had it, I needed two boppies, stacked on on top of the other, plus two small pillows and two blankets to prop their heads.
BTW-- do you have a toddler in the house? I can't remember right now if you do. When my twins came, my DD was 2 1/2, and the pillow did double duty as a "horsie," too.

She used to put it with the horseshoe parts sticking up, and straddle it, and ride it all over the house yelling "giddy UP, HORSIE!" We used to have mock-arguments over whose pillow it really was...
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