I noticed a black / brownish color on my almost 2 month olds tongue! It's the whole back of her tongue. It wasn't there 3 days ago . I've also given her gripe water more here in the last two days than I have before . The first couple times we used gripe water it was like once a day or once every day or so for her hiccups . But within the last two days I've used it 3 times a day . Could the gripe water be the cause of the discoloration? She's not on antibiotics or anything and neither am I . She's breastfed . I don't take any medications or anything . She recently had thrush so I check her mouth on a regular basis just to make sure everything looks okay. Just seeing this has freaked me out