Concerned, Do you brush your baby’s teeth?

Im freaking out because my baby is only 9 months old and only has her 2 bottom teeth but they are getting black!!!! 😳

This did not happen with my other 3 girls and I’m super strict as in I do not give her any sugar, only fruits and veggies baby food and once a day I’ll give her a little bit of regular (healthy) food. The only juice I give her is watered down apple juice (no sugar added) once to twice a day.

She wasn’t letting me brush her teeth because she would gag and then not open her mouth at all. Lately she’s been letting me a little more.

Could this be food stain or cavities??

I called her pediatrician and am waiting on a call back to see if I should have her seen there or a dentist.