My lil miss is almost 18 months old, and out of the blue today she came down with a fever of 102.3. I assumed it was due to teething, but now I have friends saying "oh my gosh, that's so high. Rush her in ASAP! No way is it teething!" Thing is, she's acting completely normal! Laughing and playing like nothing is wrong. She's had much lower fevers and been completely lethargic, etc. I gave her Tylenol nearly 2 hours ago, and it's gone down. Have any of you experienced a temp this high while LO was teething? She's been cranky for a few days, and I see at least one new tooth popping through.