I was a first time when I packed my things for the hospital and I wound up packing for things the hospital already supplied. Looking back I only needed a going home outfit, Something for the baby to wear going home and something comforable to wear while at your stay at the hospital. They supplied me with underwear which was super comfy, toiletries and towel/ wash cloth.
I did pack my baby girl bag but not mines yet... I'm 33weeks2days