Your not addressing the dispute.

A fever is 38c, great. What the parents said was that you may have misheard because a fever isn't serious until 104. Which is line's up with the language you used.

> and they said it's not a concern until...

Parent is not suggesting that a fever isn't at 100F, they're suggesting that it's not "a concern" until 104F, a number strangely similar to 100.4 that you claim you heard, presumably, while you had a fever.