Can someone please recommend me some really comfortable shoes?

I'm desperate to find comfortable shoes to walk in that won't cause me lower back pain or my make my feet sore. I have a 5mm herniated disc in my lower back and i'm only 20 yrs old. I can't really wear heels very long (if at all) without being in terrible pain. So can someone please recommend me some comfortable shoes that can go with different outfits? like maybe black or white. My style is pretty feminine/sophisticated (bebe, express, nordstroms, forever21, etc.) I don't care what the price is...i'm just really desperate! Thank you tons. God Bless you.