Am I tripping or??

Ok mommas, I’m one to always be checking my 16 month old teeth! I brush her teeth and hardly ever give her juices, just mostly water! Which she loves. Today I was doing the regular and checking her teeth after I brushed them and I noticed these discolored “spots”.. NOW I don’t know if I’m seeing these because I’m such a worried mom or if it actually is something. Doesn’t look like the early stages of tooth decay.. and I’ve noticed on the teeth coming out they have this kinda thing too. I contrasted the picture to the fullest so y’all can see it more. I’ll put the contrasted picture and the regular one.

** All her dentists visits they have told me she has healthy teeth**