Here's an article that might help you - https://homeguides.sfgate.com/getting-stains-off-white-tile-80926.html
Hi Danique, this may help you
Hi Danique. It depends on what the stain is from. If it's blood, dab the stain with hydrogen peroxide or diluted bleach. If it's coffee, tea, or juice wash the stain with detergent and hot water, then blot with hydrogen peroxide or diluted bleach. A nonabrasive all purpose cleaner or a tub/tile sink product will also remove most stains. Good luck.
Your tile if stained is not sealed. After cleaning apply a sealer to prevent more stains.